Information Artifact Ontology (IAO)
type: Ontology
version IRI: iao.owl
default language: en
contributor: Adam Goldstein
contributor: Alan Ruttenberg
contributor: Albert Goldfain
contributor: Barry Smith
contributor: Bjoern Peters
contributor: Carlo Torniai
contributor: Chris Mungall
contributor: Chris Stoeckert
contributor: Christian A. Boelling
contributor: Darren Natale
contributor: David Osumi-Sutherland
contributor: Gwen Frishkoff
contributor: Holger Stenzhorn
contributor: James A. Overton
contributor: James Malone
contributor: Jennifer Fostel
contributor: Jie Zheng
contributor: Jonathan Rees
contributor: Larisa Soldatova
contributor: Lawrence Hunter
contributor: Mathias Brochhausen
contributor: Matt Brush
contributor: Melanie Courtot
contributor: Michel Dumontier
contributor: Paolo Ciccarese
contributor: Pat Hayes
contributor: Philippe Rocca-Serra
contributor: Randy Dipert
contributor: Ron Rudnicki
contributor: Satya Sahoo
contributor: Sivaram Arabandi
contributor: Werner Ceusters
contributor: William Duncan
contributor: William Hogan
contributor: Yongqun (Oliver) He
description: The Information Artifact Ontology (IAO) is an ontology of information entities, originally driven by work by the OBI digital entity and realizable information entity branch.
license: http://creativecommons.org/licenses/by/4.0/
comment: An information artifact is, loosely, a dependent continuant or its bearer that is created as the result of one or more intentional processes. Examples: uniprot, the english language, the contents of this document or a printout of it, the temperature measurements from a weather balloon. For more information, see the project home page at https://github.com/information-artifact-ontology/IAO
comment: IDs allocated to related efforts: PNO: IAO_0020000-IAO_0020999, D_ACTS: IAO_0021000-IAO_0021999
comment: IDs allocated to subdomains of IAO. pno.owl: IAO_0020000-IAO_0020999, d-acts.owl: IAO_0021000-IAO_0021999
version info: 2020-06-10
type: NamedIndividual

BFO OWL specification label
type: AnnotationProperty
definition: Relates an entity in the ontology to the name of the variable that is used to represent it in the code that generates the BFO OWL file from the lispy specification.
curator note: Really of interest to developers only
sub property of: label

BFO CLIF specification label
type: AnnotationProperty
definition: Relates an entity in the ontology to the term that is used to represent it in the the CLIF specification of BFO2
definition source: Person:Alan Ruttenberg
curator note: Really of interest to developers only
sub property of: label

editor preferred term
type: AnnotationProperty
editor preferred term: editor preferred term
has curation status: ready for release
definition: The concise, meaningful, and human-friendly name for a class or property preferred by the ontology developers. (US-English)
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

example of usage
type: AnnotationProperty
editor preferred term: example of usage
has curation status: ready for release
definition: A phrase describing how a term should be used and/or a citation to a work which uses it. May also include other kinds of examples that facilitate immediate understanding, such as widely know prototypes or instances of a class, or cases where a relation is said to hold.
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

in branch
type: AnnotationProperty
editor preferred term: in branch
definition: An annotation property indicating which module the terms belong to. This is currently experimental and not implemented yet.
term editor: GROUP:OBI
definition source: OBI_0000277

has curation status
type: AnnotationProperty
editor preferred term: has curation status
term editor: PERSON:Alan Ruttenberg
term editor: PERSON:Bill Bug
term editor: PERSON:Melanie Courtot

definition
type: AnnotationProperty
editor preferred term: definition
has curation status: ready for release
definition: The official definition, explaining the meaning of a class or property. Shall be Aristotelian, formalized and normalized. Can be augmented with colloquial definitions.
editor note: 2012-04-05: Barry Smith The official OBI definition, explaining the meaning of a class or property: 'Shall be Aristotelian, formalized and normalized. Can be augmented with colloquial definitions' is terrible. Can you fix to something like: A statement of necessary and sufficient conditions explaining the meaning of an expression referring to a class or property. Alan Ruttenberg Your proposed definition is a reasonable candidate, except that it is very common that necessary and sufficient conditions are not given. Mostly they are necessary, occasionally they are necessary and sufficient or just sufficient. Often they use terms that are not themselves defined and so they effectively can't be evaluated by those criteria. On the specifics of the proposed definition: We don't have definitions of 'meaning' or 'expression' or 'property'. For 'reference' in the intended sense I think we use the term 'denotation'. For 'expression', I think we you mean symbol, or identifier. For 'meaning' it differs for class and property. For class we want documentation that let's the intended reader determine whether an entity is instance of the class, or not. For property we want documentation that let's the intended reader determine, given a pair of potential relata, whether the assertion that the relation holds is true. The 'intended reader' part suggests that we also specify who, we expect, would be able to understand the definition, and also generalizes over human and computer reader to include textual and logical definition. Personally, I am more comfortable weakening definition to documentation, with instructions as to what is desirable. We also have the outstanding issue of how to aim different definitions to different audiences. A clinical audience reading chebi wants a different sort of definition documentation/definition from a chemistry trained audience, and similarly there is a need for a definition that is adequate for an ontologist to work with.
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

editor note
type: AnnotationProperty
editor preferred term: editor note
has curation status: ready for release
definition: An administrative note intended for its editor. It may not be included in the publication version of the ontology, so it should contain nothing necessary for end users to understand the ontology.
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obofoundry.org/obo/obi>

term editor
type: AnnotationProperty
editor preferred term: term editor
has curation status: ready for release
definition: Name of editor entering the term in the file. The term editor is a point of contact for information regarding the term. The term editor may be, but is not always, the author of the definition, which may have been worked upon by several people
editor note: 20110707, MC: label update to term editor and definition modified accordingly. See https://github.com/information-artifact-ontology/IAO/issues/115.
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

alternative term
type: AnnotationProperty
editor preferred term: alternative term
has curation status: pending final vetting
definition: An alternative name for a class or property which means the same thing as the preferred name (semantically equivalent)
term editor: PERSON:Daniel Schober
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

definition source
type: AnnotationProperty
editor preferred term: definition source
has curation status: ready for release
definition: Formal citation, e.g. identifier in external database to indicate / attribute source(s) for the definition. Free text indicate / attribute source(s) for the definition. EXAMPLE: Author Name, URI, MeSH Term C04, PUBMED ID, Wiki uri on 31.01.2007
term editor: PERSON:Daniel Schober
definition source: Discussion on obo-discuss mailing-list, see http://bit.ly/hgm99w
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

has obsolescence reason
type: AnnotationProperty
editor preferred term: has obsolescence reason
definition: Relates an annotation property to an obsolescence reason. The values of obsolescence reasons come from a list of predefined terms, instances of the class obsolescence reason specification.
term editor: PERSON:Alan Ruttenberg
term editor: PERSON:Melanie Courtot

curator note
type: AnnotationProperty
editor preferred term: curator note
has curation status: ready for release
definition: An administrative note of use for a curator but of no use for a user
term editor: PERSON:Alan Ruttenberg

term tracker item
type: AnnotationProperty
editor preferred term: term tracker item
example of usage: the URI for an OBI Terms ticket at sourceforge, such as https://sourceforge.net/p/obi/obi-terms/772/
has curation status: pending final vetting
definition: An IRI or similar locator for a request or discussion of an ontology term.
term editor: Person: Jie Zheng, Chris Stoeckert, Alan Ruttenberg
definition source: Person: Jie Zheng, Chris Stoeckert, Alan Ruttenberg
comment: The 'tracker item' can associate a tracker with a specific ontology term.

ontology term requester
type: AnnotationProperty
editor preferred term: ontology term requester
has curation status: pending final vetting
definition: The name of the person, project, or organization that motivated inclusion of an ontology term by requesting its addition.
term editor: Person: Jie Zheng, Chris Stoeckert, Alan Ruttenberg
definition source: Person: Jie Zheng, Chris Stoeckert, Alan Ruttenberg
comment: The 'term requester' can credit the person, organization or project who request the ontology term.

is denotator type
type: AnnotationProperty
editor preferred term: is denotator type
definition: Relates an class defined in an ontology, to the type of it's denotator
editor note: In OWL 2 add AnnotationPropertyRange('is denotator type' 'denotator type')
term editor: Alan Ruttenberg

imported from
type: AnnotationProperty
editor preferred term: imported from
has curation status: pending final vetting
definition: For external terms/classes, the ontology from which the term was imported
term editor: PERSON:Alan Ruttenberg
term editor: PERSON:Melanie Courtot
definition source: GROUP:OBI:<http://purl.obolibrary.org/obo/obi>

expand expression to
type: AnnotationProperty
editor preferred term: expand expression to
example of usage: ObjectProperty: RO_0002104 Label: has plasma membrane part Annotations: IAO_0000424 "http://purl.obolibrary.org/obo/BFO_0000051 some (http://purl.org/obo/owl/GO#GO_0005886 and http://purl.obolibrary.org/obo/BFO_0000051 some ?Y)"
definition: A macro expansion tag applied to an object property (or possibly a data property) which can be used by a macro-expansion engine to generate more complex expressions from simpler ones
term editor: Chris Mungall

expand assertion to
type: AnnotationProperty
editor preferred term: expand assertion to
example of usage: ObjectProperty: RO??? Label: spatially disjoint from Annotations: expand_assertion_to "DisjointClasses: (http://purl.obolibrary.org/obo/BFO_0000051 some ?X) (http://purl.obolibrary.org/obo/BFO_0000051 some ?Y)"
definition: A macro expansion tag applied to an annotation property which can be expanded into a more detailed axiom.
term editor: Chris Mungall

first order logic expression
type: AnnotationProperty
editor preferred term: first order logic expression
term editor: PERSON:Alan Ruttenberg

antisymmetric property
type: AnnotationProperty
editor preferred term: antisymmetric property
example of usage: part_of antisymmetric property xsd:true
definition: Use boolean value xsd:true to indicate that the property is an antisymmetric property
term editor: Alan Ruttenberg

OBO foundry unique label
type: AnnotationProperty
editor preferred term: OBO foundry unique label
has curation status: pending final vetting
definition: An alternative name for a class or property which is unique across the OBO Foundry.
editor note: The intended usage of that property is as follow: OBO foundry unique labels are automatically generated based on regular expressions provided by each ontology, so that SO could specify unique label = 'sequence ' + [label], etc. , MA could specify 'mouse + [label]' etc. Upon importing terms, ontology developers can choose to use the 'OBO foundry unique label' for an imported term or not. The same applies to tools .
term editor: PERSON:Alan Ruttenberg
term editor: PERSON:Bjoern Peters
term editor: PERSON:Chris Mungall
term editor: PERSON:Melanie Courtot
definition source: GROUP:OBO Foundry <http://obofoundry.org/>

has ID digit count
type: AnnotationProperty
editor preferred term: has ID digit count
example of usage: Ontology: <http://purl.obolibrary.org/obo/ro/idrange/> Annotations: 'has ID prefix': "http://purl.obolibrary.org/obo/RO_" 'has ID digit count' : 7, rdfs:label "RO id policy" 'has ID policy for': "RO"
definition: Relates an ontology used to record id policy to the number of digits in the URI. The URI is: the 'has ID prefix" annotation property value concatenated with an integer in the id range (left padded with "0"s to make this many digits)
term editor: Person:Alan Ruttenberg

has ID range allocated to
type: AnnotationProperty
editor preferred term: has ID range allocated
example of usage: Datatype: idrange:1 Annotations: 'has ID range allocated to': "Chris Mungall" EquivalentTo: xsd:integer[> 2151 , <= 2300]
definition: Relates a datatype that encodes a range of integers to the name of the person or organization who can use those ids constructed in that range to define new terms
term editor: Person:Alan Ruttenberg

has ID policy for
type: AnnotationProperty
editor preferred term: has ID policy for
example of usage: Ontology: <http://purl.obolibrary.org/obo/ro/idrange/> Annotations: 'has ID prefix': "http://purl.obolibrary.org/obo/RO_" 'has ID digit count' : 7, rdfs:label "RO id policy" 'has ID policy for': "RO"
definition: Relating an ontology used to record id policy to the ontology namespace whose policy it manages
term editor: Person:Alan Ruttenberg

has ID prefix
type: AnnotationProperty
editor preferred term: has ID prefix
example of usage: Ontology: <http://purl.obolibrary.org/obo/ro/idrange/> Annotations: 'has ID prefix': "http://purl.obolibrary.org/obo/RO_" 'has ID digit count' : 7, rdfs:label "RO id policy" 'has ID policy for': "RO"
definition: Relates an ontology used to record id policy to a prefix concatenated with an integer in the id range (left padded with "0"s to make this many digits) to construct an ID for a term being created.
term editor: Person:Alan Ruttenberg

elucidation
type: AnnotationProperty
editor preferred term: elucidation
term editor: person:Alan Ruttenberg
definition source: Person:Barry Smith
elucidation: Primitive terms in a highest-level ontology such as BFO are terms which are so basic to our understanding of reality that there is no way of defining them in a non-circular fashion. For these, therefore, we can provide only elucidations, supplemented by examples and by axioms

has associated axiom(nl)
type: AnnotationProperty
editor preferred term: has associated axiom(nl)
term editor: Person:Alan Ruttenberg
definition source: Person:Alan Ruttenberg
elucidation: An axiom associated with a term expressed using natural language

has associated axiom(fol)
type: AnnotationProperty
editor preferred term: has associated axiom(fol)
term editor: Person:Alan Ruttenberg
definition source: Person:Alan Ruttenberg
elucidation: An axiom expressed in first order logic using CLIF syntax

is allocated id range
type: AnnotationProperty
editor preferred term: is allocated id range
definition: Relates an ontology IRI to an (inclusive) range of IRIs in an OBO name space. The range is give as, e.g. "IAO_0020000-IAO_0020999"
term editor: PERSON:Alan Ruttenberg
comment: Add as annotation triples in the granting ontology

retired from use as of
type: AnnotationProperty
editor preferred term: retired from use as of
definition: relates a class of CRID to the date after which further instances should not be made, according to the central authority
editor note: In OWL 2 add AnnotationPropertyRange xsd:dateTimeStamp
term editor: Alan Ruttenberg

has ontology root term
type: AnnotationProperty
editor preferred term: has ontology root term
definition: Ontology annotation property. Relates an ontology to a term that is a designated root term of the ontology. Display tools like OLS can use terms annotated with this property as the starting point for rendering the ontology class hierarchy. There can be more than one root.
term editor: Nicolas Matentzoglu

may be identical to
type: AnnotationProperty
editor preferred term: may be identical to
definition: A annotation relationship between two terms in an ontology that may refer to the same (natural) type but where more evidence is required before terms are merged.
term editor: David Osumi-Sutherland
term tracker item: #40
ontology term requester: VFB
comment: Edges asserting this should be annotated with to record evidence supporting the assertion and its provenance.

scheduled for obsoletion on or after
type: AnnotationProperty
editor preferred term: scheduled for obsoletion on or after
definition: Used when the class or object is scheduled for obsoletion/deprecation on or after a particular date.
term editor: Chris Mungall, Jie Zheng
term tracker item: https://github.com/geneontology/go-ontology/issues/15532
term tracker item: https://github.com/information-artifact-ontology/ontology-metadata/issues/32
ontology term requester: GO ontology
range: dateTime

has axiom label
type: AnnotationProperty
editor preferred term: has axiom id
term editor: Person:Alan Ruttenberg
definition source: Person:Alan Ruttenberg
elucidation: A URI that is intended to be unique label for an axiom used for tracking change to the ontology. For an axiom expressed in different languages, each expression is given the same URI

term replaced by
type: AnnotationProperty
editor preferred term: term replaced by
has curation status: pending final vetting
definition: Use on obsolete terms, relating the term to another term that can be used as a substitute
term editor: Person:Alan Ruttenberg
definition source: Person:Alan Ruttenberg
comment: Add as annotation triples in the granting ontology

temporal interpretation
type: AnnotationProperty
definition: An assertion that holds between an OWL Object Property and a temporal interpretation that elucidates how OWL Class Axioms that use this property are to be interpreted in a temporal context.

part of
type: ObjectProperty
inverse of: has part
type: TransitiveProperty
editor preferred term: is part of
example of usage: my brain is part of my body (continuant parthood, two material entities)
example of usage: my stomach cavity is part of my stomach (continuant parthood, immaterial entity is part of material entity)
example of usage: this day is part of this year (occurrent parthood)
definition: a core relation that holds between a part and its whole
editor note: Everything is part of itself. Any part of any part of a thing is itself part of that thing. Two distinct things cannot be part of each other.
editor note: Occurrents are not subject to change and so parthood between occurrents holds for all the times that the part exists. Many continuants are subject to change, so parthood between continuants will only hold at certain times, but this is difficult to specify in OWL. See https://code.google.com/p/obo-relations/wiki/ROAndTime
editor note: Parthood requires the part and the whole to have compatible classes: only an occurrent can be part of an occurrent; only a process can be part of a process; only a continuant can be part of a continuant; only an independent continuant can be part of an independent continuant; only an immaterial entity can be part of an immaterial entity; only a specifically dependent continuant can be part of a specifically dependent continuant; only a generically dependent continuant can be part of a generically dependent continuant. (This list is not exhaustive.) A continuant cannot be part of an occurrent: use 'participates in'. An occurrent cannot be part of a continuant: use 'has participant'. A material entity cannot be part of an immaterial entity: use 'has location'. A specifically dependent continuant cannot be part of an independent continuant: use 'inheres in'. An independent continuant cannot be part of a specifically dependent continuant: use 'bearer of'.
alternative term: part_of
temporal interpretation: RO_0001901

has part
type: ObjectProperty
type: TransitiveProperty
editor preferred term: has part
example of usage: my body has part my brain (continuant parthood, two material entities)
example of usage: my stomach has part my stomach cavity (continuant parthood, material entity has part immaterial entity)
example of usage: this year has part this day (occurrent parthood)
definition: a core relation that holds between a whole and its part
editor note: Everything has itself as a part. Any part of any part of a thing is itself part of that thing. Two distinct things cannot have each other as a part.
editor note: Occurrents are not subject to change and so parthood between occurrents holds for all the times that the part exists. Many continuants are subject to change, so parthood between continuants will only hold at certain times, but this is difficult to specify in OWL. See https://code.google.com/p/obo-relations/wiki/ROAndTime
editor note: Parthood requires the part and the whole to have compatible classes: only an occurrent have an occurrent as part; only a process can have a process as part; only a continuant can have a continuant as part; only an independent continuant can have an independent continuant as part; only a specifically dependent continuant can have a specifically dependent continuant as part; only a generically dependent continuant can have a generically dependent continuant as part. (This list is not exhaustive.) A continuant cannot have an occurrent as part: use 'participates in'. An occurrent cannot have a continuant as part: use 'has participant'. An immaterial entity cannot have a material entity as part: use 'location of'. An independent continuant cannot have a specifically dependent continuant as part: use 'bearer of'. A specifically dependent continuant cannot have an independent continuant as part: use 'inheres in'.
alternative term: has_part
temporal interpretation: RO_0001901

realized in
type: ObjectProperty
inverse of: realizes
domain: realizable entity
range: process
editor preferred term: realized in
example of usage: this disease is realized in this disease course
example of usage: this fragility is realized in this shattering
example of usage: this investigator role is realized in this investigation
alternative term: is realized by
alternative term: realized_in
elucidation: [copied from inverse property 'realizes'] to say that b realizes c at t is to assert that there is some material entity d & b is a process which has participant d at t & c is a disposition or role of which d is bearer_of at t& the type instantiated by b is correlated with the type instantiated by c. (axiom label in BFO2 Reference: [059-003])
comment: Paraphrase of elucidation: a relation between a realizable entity and a process, where there is some material entity that is bearer of the realizable entity and participates in the process, and the realizable entity comes to be realized in the course of the process

realizes
type: ObjectProperty
domain: process
range: realizable entity
editor preferred term: realizes
example of usage: this disease course realizes this disease
example of usage: this investigation realizes this investigator role
example of usage: this shattering realizes this fragility
elucidation: to say that b realizes c at t is to assert that there is some material entity d & b is a process which has participant d at t & c is a disposition or role of which d is bearer_of at t& the type instantiated by b is correlated with the type instantiated by c. (axiom label in BFO2 Reference: [059-003])
comment: Paraphrase of elucidation: a relation between a process and a realizable entity, where there is some material entity that is bearer of the realizable entity and participates in the process, and the realizable entity comes to be realized in the course of the process

occurs in
type: ObjectProperty
inverse of: contains process
domain: occurrent
range: independent continuant
property chain axiom: part of
editor preferred term: occurs in
definition: b occurs_in c =def b is a process and c is a material entity or immaterial entity& there exists a spatiotemporal region r and b occupies_spatiotemporal_region r.& forall(t) if b exists_at t then c exists_at t & there exist spatial regions s and s’ where & b spatially_projects_onto s at t& c is occupies_spatial_region s’ at t& s is a proper_continuant_part_of s’ at t
alternative term: occurs_in
alternative term: unfolds in
alternative term: unfolds_in
comment: Paraphrase of definition: a relation between a process and an independent continuant, in which the process takes place entirely within the independent continuant

contains process
type: ObjectProperty
editor preferred term: site of
definition: [copied from inverse property 'occurs in'] b occurs_in c =def b is a process and c is a material entity or immaterial entity& there exists a spatiotemporal region r and b occupies_spatiotemporal_region r.& forall(t) if b exists_at t then c exists_at t & there exist spatial regions s and s’ where & b spatially_projects_onto s at t& c is occupies_spatial_region s’ at t& s is a proper_continuant_part_of s’ at t
comment: Paraphrase of definition: a relation between an independent continuant and a process, in which the process takes place entirely within the independent continuant

has measurement unit label
type: ObjectProperty
sub property of: has part
type: FunctionalProperty
range: measurement unit label

obsolete_specifically denotes
type: ObjectProperty
sub property of: ObsoleteProperty
example of usage: The process of creation is, for example, writing down on paper the name of a friend by deliberately creating a certain pattern using ink. Here the ink + paper is the independent continuant and the carrier is the pattern in the ink. c = pattern in the ink b = paper + ink r = friend
has curation status: pending final vetting
definition: c specifically denotes r =def r is a portion of reality & c is a particular quality & c depends specifically on some independent continuant b & b acquired c as the result of the achievement of an objective to enable pointing to r repeatedly. Marked means there is a changed or additional quality of the bearer - the quality is the information carrier. Case 1 Memory trace as mark created when reading some description of some friend. The trace can denote. Case 2 Pattern of ink arrayed on paper as mark when writing down a friend's name Case 3 Pattern of magnetic domains on scattered pieces of a hard disk platter as mark when saving a file.
editor note: 8/6/2009 Alan Ruttenberg: The suggestions is to deprecate specific and generically denotes in favor of a single denote relationship that corresponds to the generic sense
editor note: see https://github.com/information-artifact-ontology/IAO/issues/25&q=denote
term editor: Alan Ruttenberg
definition source: Smith, Ceusters, Ruttenberg, 2000 years of philosophy
has obsolescence reason: failed exploratory term
deprecated: true

is about
type: ObjectProperty
domain: information content entity
example of usage: This document is about information artifacts and their representations
has curation status: pending final vetting
definition: A (currently) primitive relation that relates an information artifact to an entity.
editor note: 7/6/2009 Alan Ruttenberg. Following discussion with Jonathan Rees, and introduction of "mentions" relation. Weaken the is_about relationship to be primitive. We will try to build it back up by elaborating the various subproperties that are more precisely defined. Some currently missing phenomena that should be considered "about" are predications - "The only person who knows the answer is sitting beside me" , Allegory, Satire, and other literary forms that can be topical without explicitly mentioning the topic.
term editor: person:Alan Ruttenberg
definition source: Smith, Ceusters, Ruttenberg, 2000 years of philosophy

mentions
type: ObjectProperty
sub property of: is about
has curation status: pending final vetting
definition: An information artifact IA mentions an entity E exactly when it has a component/part that denotes E
editor note: 7/6/2009 Alan Ruttenberg. P4 RC1 munges our GCI so remove it for now: mentions some entity equivalentTo has_part some ('generically denotes' some entity)
editor note: 7/6/2009 Alan Ruttenberg: Add this relation following conversation with Jonathan Rees that N&S GCI for is_about was too strong. Really it was simply sufficient. To effect this change we introduce this relation, which is subproperty of is_about, and have previous GCI use this relation "mentions" in it's (logical) definition
term editor: PERSON: Jonathan Rees
term editor: Person: Alan Ruttenberg

denotes
type: ObjectProperty
sub property of: is about
inverse of: denoted by
domain: information content entity
range: entity
example of usage: A person's name denotes the person. A variable name in a computer program denotes some piece of memory. Lexically equivalent strings can denote different things, for instance "Alan" can denote different people. In each case of use, there is a case of the denotation relation obtaining, between "Alan" and the person that is being named.
definition: A primitive, instance-level, relation obtaining between an information content entity and some portion of reality. Denotation is what happens when someone creates an information content entity E in order to specifically refer to something. The only relation between E and the thing is that E can be used to 'pick out' the thing. This relation connects those two together. Freedictionary.com sense 3: To signify directly; refer to specifically
editor note: 2009-11-10 Alan Ruttenberg. Old definition said the following to emphasize the generic nature of this relation. We no longer have 'specifically denotes', which would have been primitive, so make this relation primitive. g denotes r =def r is a portion of reality there is some c that is a concretization of g every c that is a concretization of g specifically denotes r
term editor: person:Alan Ruttenberg
definition source: Conversations with Barry Smith, Werner Ceusters, Bjoern Peters, Michel Dumontier, Melanie Courtot, James Malone, Bill Hogan

obsolete_materially denotes
type: ObjectProperty
sub property of: ObsoleteProperty
editor note: see https://github.com/information-artifact-ontology/IAO/issues/25&q=denote
has obsolescence reason: failed exploratory term
deprecated: true

is quality measurement of
type: ObjectProperty
sub property of: is about
inverse of: is quality measured as
domain: measurement datum
range: quality
definition: m is a quality measurement of q at t. When q is a quality, there is a measurement process p that has specified output m, a measurement datum, that is about q
editor note: 8/6/2009 Alan Ruttenberg: The strategy is to be rather specific with this relationship. There are other kinds of measurements that are not of qualities, such as those that measure time. We will add these as separate properties for the moment and see about generalizing later
editor note: From the second IAO workshop [Alan Ruttenberg 8/6/2009: not completely current, though bringing in comparison is probably important] This one is the one we are struggling with at the moment. The issue is what a measurement measures. On the one hand saying that it measures the quality would include it "measuring" the bearer = referring to the bearer in the measurement. However this makes comparisons of two different things not possible. On the other hand not having it inhere in the bearer, on the face of it, breaks the audit trail. Werner suggests a solution based on "Magnitudes" a proposal for which we are awaiting details. -- From the second IAO workshop, various comments, [commented on by Alan Ruttenberg 8/6/2009] unit of measure is a quality, e.g. the length of a ruler. [We decided to hedge on what units of measure are, instead talking about measurement unit labels, which are the information content entities that are about whatever measurement units are. For IAO we need that information entity in any case. See the term measurement unit label] [Some struggling with the various subflavors of is_about. We subsequently removed the relation represents, and describes until and only when we have a better theory] a represents b means either a denotes b or a describes describe: a describes b means a is about b and a allows an inference of at least one quality of b We have had a long discussion about denotes versus describes.
editor note: From the second IAO workshop: An attempt at tieing the quality to the measurement datum more carefully. a is a magnitude means a is a determinate quality particular inhering in some bearer b existing at a time t that can be represented/denoted by an information content entity e that has parts denoting a unit of measure, a number, and b. The unit of measure is an instance of the determinable quality.
editor note: From the second meeting on IAO: An attempt at defining assay using Barry's "reliability" wording assay: process and has_input some material entity and has_output some information content entity and which is such that instances of this process type reliably generate outputs that describes the input.
editor note: This one is the one we are struggling with at the moment. The issue is what a measurement measures. On the one hand saying that it measures the quality would include it "measuring" the bearer = referring to the bearer in the measurement. However this makes comparisons of two different things not possible. On the other hand not having it inhere in the bearer, on the face of it, breaks the audit trail. Werner suggests a solution based on "Magnitudes" a proposal for which we are awaiting details.
term editor: Alan Ruttenberg

obsolete_describes
type: ObjectProperty
sub property of: ObsoleteProperty
has obsolescence reason: failed exploratory term
deprecated: true

obsolete_represents
type: ObjectProperty
sub property of: ObsoleteProperty
has obsolescence reason: failed exploratory term
deprecated: true

denoted by
type: ObjectProperty
domain: entity
range: information content entity
definition: inverse of the relation 'denotes'
term editor: Person: Jie Zheng, Chris Stoeckert, Mike Conlon
term tracker item: https://github.com/information-artifact-ontology/IAO/issues/206

has coordinate unit label
type: ObjectProperty
sub property of: has part
type: FunctionalProperty
comment: relating a cartesian spatial coordinate datum to a unit label that together with the values represent a point

is duration of
type: ObjectProperty
sub property of: is about
domain: time measurement datum
range: process
has curation status: metadata complete
definition: relates a process to a time-measurement-datum that represents the duration of the process
term editor: Person:Alan Ruttenberg

is quality measured as
type: ObjectProperty
has curation status: metadata complete
definition: inverse of the relation of is quality measurement of
editor note: 2009/10/19 Alan Ruttenberg. Named 'junk' relation useful in restrictions, but not a real instance relationship
term editor: Person:Alan Ruttenberg

is quality specification of
type: ObjectProperty
sub property of: is about
inverse of: quality is specified as
has curation status: metadata complete
definition: A relation between a data item and a quality of a material entity where the material entity is the specified output of a material transformation which achieves an objective specification that indicates the intended value of the specified quality.
term editor: Person:Alan Ruttenberg
term editor: Person:Bjoern Peters

quality is specified as
type: ObjectProperty
has curation status: metadata complete
definition: inverse of the relation of is quality specification of
editor note: 2009/10/19 Alan Ruttenberg. Named 'junk' relation useful in restrictions, but not a real instance relationship
term editor: Person:Alan Ruttenberg
term editor: Person:Bjoern Peters

has time stamp
type: ObjectProperty
sub property of: has part
type: FunctionalProperty
domain: time stamped measurement datum
range: time measurement datum
has curation status: metadata incomplete
definition: relates a time stamped measurement datum to the time measurement datum that denotes the time when the measurement was taken
term editor: Alan Ruttenberg

has measurement datum
type: ObjectProperty
sub property of: has part
domain: time stamped measurement datum
range: Class
  intersection of: measurement datum
  intersection of: Class
    complement of: time measurement datum
has curation status: metadata incomplete
definition: relates a time stamped measurement datum to the measurement datum that was measured
term editor: Alan Ruttenberg

has_specified_input
type: ObjectProperty
equivalent property:
  inverse of: is_specified_input_of
sub property of: has participant
inverse of: is_specified_input_of
domain: planned process
editor preferred term: has_specified_input
example of usage: see is_input_of example_of_usage
has curation status: ready for release
definition: A relation between a planned process and a continuant participating in that process that is not created during the process. The presence of the continuant during the process is explicitly specified in the plan specification which the process realizes the concretization of.
editor note: 8/17/09: specified inputs of one process are not necessarily specified inputs of a larger process that it is part of. This is in contrast to how 'has participant' works.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Bjoern Peters
term editor: PERSON: Larry Hunter
term editor: PERSON: Melanie Coutot
imported from: obi.owl

is_specified_input_of
type: ObjectProperty

has_specified_output
type: ObjectProperty
equivalent property:
  inverse of: is_specified_output_of
sub property of: has participant
inverse of: is_specified_output_of
domain: planned process
editor preferred term: has_specified_output
has curation status: ready for release
definition: A relation between a planned process and a continuant participating in that process. The presence of the continuant at the end of the process is explicitly specified in the objective specification which the process realizes the concretization of.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Bjoern Peters
term editor: PERSON: Larry Hunter
term editor: PERSON: Melanie Courtot
imported from: obi.owl

is_specified_output_of
type: ObjectProperty
equivalent property:
  inverse of: has_specified_output
sub property of: participates in
range: planned process
editor preferred term: is_specified_output_of
has curation status: ready for release
definition: A relation between a planned process and a continuant participating in that process. The presence of the continuant at the end of the process is explicitly specified in the objective specification which the process realizes the concretization of.
term editor: Alan Ruttenberg
term editor: PERSON:Bjoern Peters
imported from: obi.owl

inheres in
type: ObjectProperty
inverse of: bearer of
editor preferred term: inheres in
example of usage: this fragility inheres in this vase
example of usage: this red color inheres in this apple
definition: a relation between a specifically dependent continuant (the dependent) and an independent continuant (the bearer), in which the dependent specifically depends on the bearer for its existence
editor note: A dependent inheres in its bearer at all times for which the dependent exists.
alternative term: inheres_in
temporal interpretation: RO_0001901

bearer of
type: ObjectProperty
range: specifically dependent continuant
editor preferred term: bearer of
example of usage: this apple is bearer of this red color
example of usage: this vase is bearer of this fragility
definition: a relation between an independent continuant (the bearer) and a specifically dependent continuant (the dependent), in which the dependent specifically depends on the bearer for its existence
editor note: A bearer can have many dependents, and its dependents can exist for different periods of time, but none of its dependents can exist when the bearer does not exist.
alternative term: bearer_of
alternative term: is bearer of
temporal interpretation: RO_0001901

participates in
type: ObjectProperty
inverse of: has participant
domain: continuant
range: occurrent
editor preferred term: participates in
example of usage: this blood clot participates in this blood coagulation
example of usage: this input material (or this output material) participates in this process
example of usage: this investigator participates in this investigation
definition: a relation between a continuant and a process, in which the continuant is somehow involved in the process
alternative term: participates_in

has participant
type: ObjectProperty
domain: occurrent
range: continuant
editor preferred term: has participant
example of usage: this blood coagulation has participant this blood clot
example of usage: this investigation has participant this investigator
example of usage: this process has participant this input material (or this output material)
definition: a relation between a process and a continuant, in which the continuant is somehow involved in the process
editor note: Has_participant is a primitive instance-level relation between a process, a continuant, and a time at which the continuant participates in some way in the process. The relation obtains, for example, when this particular process of oxygen exchange across this particular alveolar membrane has_participant this particular sample of hemoglobin at this particular time.
alternative term: has_participant
source: http://www.obofoundry.org/ro/#OBO_REL:has_participant

is concretized as
type: ObjectProperty
inverse of: concretizes
domain: generically dependent continuant
range: specifically dependent continuant
example of usage: A journal article is an information artifact that inheres in some number of printed journals. For each copy of the printed journal there is some quality that carries the journal article, such as a pattern of ink. The journal article (a generically dependent continuant) is concretized as the quality (a specifically dependent continuant), and both depend on that copy of the printed journal (an independent continuant).
example of usage: An investigator reads a protocol and forms a plan to carry out an assay. The plan is a realizable entity (a specifically dependent continuant) that concretizes the protocol (a generically dependent continuant), and both depend on the investigator (an independent continuant). The plan is then realized by the assay (a process).
definition: A relationship between a generically dependent continuant and a specifically dependent continuant, in which the generically dependent continuant depends on some independent continuant in virtue of the fact that the specifically dependent continuant also depends on that same independent continuant. A generically dependent continuant may be concretized as multiple specifically dependent continuants.

concretizes
type: ObjectProperty
domain: specifically dependent continuant
range: generically dependent continuant
example of usage: A journal article is an information artifact that inheres in some number of printed journals. For each copy of the printed journal there is some quality that carries the journal article, such as a pattern of ink. The quality (a specifically dependent continuant) concretizes the journal article (a generically dependent continuant), and both depend on that copy of the printed journal (an independent continuant).
example of usage: An investigator reads a protocol and forms a plan to carry out an assay. The plan is a realizable entity (a specifically dependent continuant) that concretizes the protocol (a generically dependent continuant), and both depend on the investigator (an independent continuant). The plan is then realized by the assay (a process).
definition: A relationship between a specifically dependent continuant and a generically dependent continuant, in which the generically dependent continuant depends on some independent continuant in virtue of the fact that the specifically dependent continuant also depends on that same independent continuant. Multiple specifically dependent continuants can concretize the same generically dependent continuant.

function of
type: ObjectProperty
sub property of: inheres in
inverse of: has function
example of usage: this catalysis function is a function of this enzyme
definition: a relation between a function and an independent continuant (the bearer), in which the function specifically depends on the bearer for its existence
editor note: A function inheres in its bearer at all times for which the function exists, however the function need not be realized at all the times that the function exists.
alternative term: function_of
alternative term: is function of

quality of
type: ObjectProperty
sub property of: inheres in
inverse of: has quality
example of usage: this red color is a quality of this apple
definition: a relation between a quality and an independent continuant (the bearer), in which the quality specifically depends on the bearer for its existence
editor note: A quality inheres in its bearer at all times for which the quality exists.
alternative term: is quality of
alternative term: quality_of

role of
type: ObjectProperty
sub property of: inheres in
inverse of: has role
example of usage: this investigator role is a role of this person
definition: a relation between a role and an independent continuant (the bearer), in which the role specifically depends on the bearer for its existence
editor note: A role inheres in its bearer at all times for which the role exists, however the role need not be realized at all the times that the role exists.
alternative term: is role of
alternative term: role_of

has function
type: ObjectProperty
sub property of: bearer of
domain: independent continuant
example of usage: this enzyme has function this catalysis function (more colloquially: this enzyme has this catalysis function)
definition: a relation between an independent continuant (the bearer) and a function, in which the function specifically depends on the bearer for its existence
editor note: A bearer can have many functions, and its functions can exist for different periods of time, but none of its functions can exist when the bearer does not exist. A function need not be realized at all the times that the function exists.
alternative term: has_function

has quality
type: ObjectProperty
sub property of: bearer of
range: quality
example of usage: this apple has quality this red color
definition: a relation between an independent continuant (the bearer) and a quality, in which the quality specifically depends on the bearer for its existence
editor note: A bearer can have many qualities, and its qualities can exist for different periods of time, but none of its qualities can exist when the bearer does not exist.
alternative term: has_quality

has role
type: ObjectProperty
sub property of: bearer of
domain: independent continuant
range: role
example of usage: this person has role this investigator role (more colloquially: this person has this role of investigator)
definition: a relation between an independent continuant (the bearer) and a role, in which the role specifically depends on the bearer for its existence
editor note: A bearer can have many roles, and its roles can exist for different periods of time, but none of its roles can exist when the bearer does not exist. A role need not be realized at all the times that the role exists.
alternative term: has_role

has disposition
type: ObjectProperty
sub property of: bearer of
inverse of: disposition of
domain: independent continuant
definition: a relation between an independent continuant (the bearer) and a disposition, in which the disposition specifically depends on the bearer for its existence

disposition of
type: ObjectProperty
sub property of: inheres in

derives from
type: ObjectProperty
inverse of: derives into
example of usage: this cell derives from this parent cell (cell division)
example of usage: this nucleus derives from this parent nucleus (nuclear division)
has curation status: pending final vetting
definition: a relation between two distinct material entities, the new entity and the old entity, in which the new entity begins to exist when the old entity ceases to exist, and the new entity inherits the significant portion of the matter of the old entity
editor note: This is a very general relation. More specific relations are preferred when applicable, such as 'directly develops from'.
alternative term: derives_from

derives into
type: ObjectProperty
example of usage: this parent cell derives into this cell (cell division)
example of usage: this parent nucleus derives into this nucleus (nuclear division)
has curation status: pending final vetting
definition: a relation between two distinct material entities, the old entity and the new entity, in which the new entity begins to exist when the old entity ceases to exist, and the new entity inherits the significant portion of the matter of the old entity
editor note: This is a very general relation. More specific relations are preferred when applicable, such as 'directly develops into'. To avoid making statements about a future that may not come to pass, it is often better to use the backward-looking 'derives from' rather than the forward-looking 'derives into'.
alternative term: derives_into

location of
type: ObjectProperty
inverse of: located in
type: TransitiveProperty
editor preferred term: is location of
example of usage: my head is the location of my brain
example of usage: this cage is the location of this rat
definition: a relation between two independent continuants, the location and the target, in which the target is entirely within the location
editor note: Most location relations will only hold at certain times, but this is difficult to specify in OWL. See https://code.google.com/p/obo-relations/wiki/ROAndTime
alternative term: location_of
temporal interpretation: RO_0001901

located in
type: ObjectProperty
type: TransitiveProperty
domain: independent continuant
domain: Class
  intersection of: independent continuant
  intersection of: Class
    complement of: spatial region
range: independent continuant
range: Class
  intersection of: independent continuant
  intersection of: Class
    complement of: spatial region
editor preferred term: located in
example of usage: my brain is located in my head
example of usage: this rat is located in this cage
definition: a relation between two independent continuants, the target and the location, in which the target is entirely within the location
editor note: Location as a relation between instances: The primitive instance-level relation c located_in r at t reflects the fact that each continuant is at any given time associated with exactly one spatial region, namely its exact location. Following we can use this relation to define a further instance-level location relation - not between a continuant and the region which it exactly occupies, but rather between one continuant and another. c is located in c1, in this sense, whenever the spatial region occupied by c is part_of the spatial region occupied by c1. Note that this relation comprehends both the relation of exact location between one continuant and another which obtains when r and r1 are identical (for example, when a portion of fluid exactly fills a cavity), as well as those sorts of inexact location relations which obtain, for example, between brain and head or between ovum and uterus
editor note: Most location relations will only hold at certain times, but this is difficult to specify in OWL. See https://code.google.com/p/obo-relations/wiki/ROAndTime
alternative term: located_in
temporal interpretation: RO_0001901
source: http://www.obofoundry.org/ro/#OBO_REL:located_in

Axiom
annotated source: located in
annotated property: domain
annotated target: independent continuant
editor note: This is redundant with the more specific 'independent and not spatial region' constraint. We leave in the redundant axiom for use with reasoners that do not use negation.

Axiom
annotated source: located in
annotated property: range
annotated target: independent continuant
editor note: This is redundant with the more specific 'independent and not spatial region' constraint. We leave in the redundant axiom for use with reasoners that do not use negation.

2D boundary of
type: ObjectProperty
inverse of: has 2D boundary
example of usage: the surface of my skin is a 2D boundary of my body
definition: a relation between a 2D immaterial entity (the boundary) and a material entity, in which the boundary delimits the material entity
editor note: A 2D boundary may have holes and gaps, but it must be a single connected entity, not an aggregate of several disconnected parts.
editor note: Although the boundary is two-dimensional, it exists in three-dimensional space and thus has a 3D shape.
alternative term: 2D_boundary_of
alternative term: boundary of
alternative term: is 2D boundary of
alternative term: is boundary of
temporal interpretation: RO_0001901

has 2D boundary
type: ObjectProperty
domain: material entity
range: immaterial entity
example of usage: my body has 2D boundary the surface of my skin
definition: a relation between a material entity and a 2D immaterial entity (the boundary), in which the boundary delimits the material entity
editor note: A 2D boundary may have holes and gaps, but it must be a single connected entity, not an aggregate of several disconnected parts.
editor note: Although the boundary is two-dimensional, it exists in three-dimensional space and thus has a 3D shape.
alternative term: has boundary
alternative term: has_2D_boundary
temporal interpretation: RO_0001901

member of
type: ObjectProperty
sub property of: part of
inverse of: has member
example of usage: An organism that is a member of a population of organisms
definition: is member of is a mereological relation between a item and a collection.
alternative term: is member of
alternative term: member part of
definition source: SIO
temporal interpretation: RO_0001901

has member
type: ObjectProperty
sub property of: has part
type: IrreflexiveProperty
definition: has member is a mereological relation between a collection and an item.
definition source: SIO
temporal interpretation: RO_0001901

has measurement value
type: DatatypeProperty
type: FunctionalProperty
domain: scalar measurement datum
range: double

has x coordinate value
type: DatatypeProperty
type: FunctionalProperty
range: float

has z coordinate value
type: DatatypeProperty
type: FunctionalProperty
range: float

has y coordinate value
type: DatatypeProperty
type: FunctionalProperty
range: float

count
type: Class
subclass of: measurement datum
definition: A measurement datum that is the output of counting.
term editor: Mathias Brochhausen
elucidation: A measurement datum that is the output of counting.

entity
type: Class
subclass of: Thing
BFO OWL specification label: entity
BFO CLIF specification label: Entity
example of usage: Julius Caesar
example of usage: Verdi’s Requiem
example of usage: the Second World War
example of usage: your body mass index
editor note: BFO 2 Reference: In all areas of empirical inquiry we encounter general terms of two sorts. First are general terms which refer to universals or types:animaltuberculosissurgical procedurediseaseSecond, are general terms used to refer to groups of entities which instantiate a given universal but do not correspond to the extension of any subuniversal of that universal because there is nothing intrinsic to the entities in question by virtue of which they – and only they – are counted as belonging to the given group. Examples are: animal purchased by the Emperortuberculosis diagnosed on a Wednesdaysurgical procedure performed on a patient from Stockholmperson identified as candidate for clinical trial #2056-555person who is signatory of Form 656-PPVpainting by Leonardo da VinciSuch terms, which represent what are called ‘specializations’ in [81
editor note: Entity doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. For example Werner Ceusters 'portions of reality' include 4 sorts, entities (as BFO construes them), universals, configurations, and relations. It is an open question as to whether entities as construed in BFO will at some point also include these other portions of reality. See, for example, 'How to track absolutely everything' at http://www.referent-tracking.com/_RTU/papers/CeustersICbookRevised.pdf
elucidation: An entity is anything that exists or has existed or will exist. (axiom label in BFO2 Reference: [001-001])

Axiom
annotated source: entity
annotated property: editor note
annotated target: Entity doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. For example Werner Ceusters 'portions of reality' include 4 sorts, entities (as BFO construes them), universals, configurations, and relations. It is an open question as to whether entities as construed in BFO will at some point also include these other portions of reality. See, for example, 'How to track absolutely everything' at http://www.referent-tracking.com/_RTU/papers/CeustersICbookRevised.pdf
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000004
comment: per discussion with Barry Smith

Axiom
annotated source: entity
annotated property: elucidation
annotated target: An entity is anything that exists or has existed or will exist. (axiom label in BFO2 Reference: [001-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/001-001

continuant
type: Class
subclass of: entity
disjoint with: occurrent
disjoint with: Restriction
  on property: part of
  some values from: occurrent
BFO OWL specification label: continuant
BFO CLIF specification label: Continuant
definition: An entity that exists in full at any time in which it exists at all, persists through time while maintaining its identity and has no temporal parts.
editor note: BFO 2 Reference: Continuant entities are entities which can be sliced to yield parts only along the spatial dimension, yielding for example the parts of your table which we call its legs, its top, its nails. ‘My desk stretches from the window to the door. It has spatial parts, and can be sliced (in space) in two. With respect to time, however, a thing is a continuant.’ [60, p. 240
editor note: Continuant doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. For example, in an expansion involving bringing in some of Ceuster's other portions of reality, questions are raised as to whether universals are continuants
elucidation: A continuant is an entity that persists, endures, or continues to exist through time while maintaining its identity. (axiom label in BFO2 Reference: [008-002])
has associated axiom(nl): if b is a continuant and if, for some t, c has_continuant_part b at t, then c is a continuant. (axiom label in BFO2 Reference: [126-001])
has associated axiom(nl): if b is a continuant and if, for some t, cis continuant_part of b at t, then c is a continuant. (axiom label in BFO2 Reference: [009-002])
has associated axiom(nl): if b is a material entity, then there is some temporal interval (referred to below as a one-dimensional temporal region) during which b exists. (axiom label in BFO2 Reference: [011-002])
has associated axiom(fol): (forall (x y) (if (and (Continuant x) (exists (t) (continuantPartOfAt y x t))) (Continuant y))) // axiom label in BFO2 CLIF: [009-002]
has associated axiom(fol): (forall (x y) (if (and (Continuant x) (exists (t) (hasContinuantPartOfAt y x t))) (Continuant y))) // axiom label in BFO2 CLIF: [126-001]
has associated axiom(fol): (forall (x) (if (Continuant x) (Entity x))) // axiom label in BFO2 CLIF: [008-002]
has associated axiom(fol): (forall (x) (if (Material Entity x) (exists (t) (and (TemporalRegion t) (existsAt x t))))) // axiom label in BFO2 CLIF: [011-002]

Axiom
annotated source: continuant
annotated property: editor note
annotated target: Continuant doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. For example, in an expansion involving bringing in some of Ceuster's other portions of reality, questions are raised as to whether universals are continuants
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000007

Axiom
annotated source: continuant
annotated property: elucidation
annotated target: A continuant is an entity that persists, endures, or continues to exist through time while maintaining its identity. (axiom label in BFO2 Reference: [008-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/008-002

Axiom
annotated source: continuant
annotated property: has associated axiom(nl)
annotated target: if b is a continuant and if, for some t, c has_continuant_part b at t, then c is a continuant. (axiom label in BFO2 Reference: [126-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/126-001

Axiom
annotated source: continuant
annotated property: has associated axiom(nl)
annotated target: if b is a continuant and if, for some t, cis continuant_part of b at t, then c is a continuant. (axiom label in BFO2 Reference: [009-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/009-002

Axiom
annotated source: continuant
annotated property: has associated axiom(nl)
annotated target: if b is a material entity, then there is some temporal interval (referred to below as a one-dimensional temporal region) during which b exists. (axiom label in BFO2 Reference: [011-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/011-002

Axiom
annotated source: continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x y) (if (and (Continuant x) (exists (t) (continuantPartOfAt y x t))) (Continuant y))) // axiom label in BFO2 CLIF: [009-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/009-002

Axiom
annotated source: continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x y) (if (and (Continuant x) (exists (t) (hasContinuantPartOfAt y x t))) (Continuant y))) // axiom label in BFO2 CLIF: [126-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/126-001

Axiom
annotated source: continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Continuant x) (Entity x))) // axiom label in BFO2 CLIF: [008-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/008-002

Axiom
annotated source: continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Material Entity x) (exists (t) (and (TemporalRegion t) (existsAt x t))))) // axiom label in BFO2 CLIF: [011-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/011-002

occurrent
type: Class
subclass of: entity
disjoint with: Restriction
  on property: part of
  some values from: continuant
BFO OWL specification label: occurrent
BFO CLIF specification label: Occurrent
definition: An entity that has temporal parts and that happens, unfolds or develops through time.
editor note: BFO 2 Reference: every occurrent that is not a temporal or spatiotemporal region is s-dependent on some independent continuant that is not a spatial region
editor note: BFO 2 Reference: s-dependence obtains between every process and its participants in the sense that, as a matter of necessity, this process could not have existed unless these or those participants existed also. A process may have a succession of participants at different phases of its unfolding. Thus there may be different players on the field at different times during the course of a football game; but the process which is the entire game s-depends_on all of these players nonetheless. Some temporal parts of this process will s-depend_on on only some of the players.
editor note: Occurrent doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. An example would be the sum of a process and the process boundary of another process.
editor note: Simons uses different terminology for relations of occurrents to regions: Denote the spatio-temporal location of a given occurrent e by 'spn[e]' and call this region its span. We may say an occurrent is at its span, in any larger region, and covers any smaller region. Now suppose we have fixed a frame of reference so that we can speak not merely of spatio-temporal but also of spatial regions (places) and temporal regions (times). The spread of an occurrent, (relative to a frame of reference) is the space it exactly occupies, and its spell is likewise the time it exactly occupies. We write 'spr[e]' and `spl[e]' respectively for the spread and spell of e, omitting mention of the frame.
elucidation: An occurrent is an entity that unfolds itself in time or it is the instantaneous boundary of such an entity (for example a beginning or an ending) or it is a temporal or spatiotemporal region which such an entity occupies_temporal_region or occupies_spatiotemporal_region. (axiom label in BFO2 Reference: [077-002])
has associated axiom(nl): Every occurrent occupies_spatiotemporal_region some spatiotemporal region. (axiom label in BFO2 Reference: [108-001])
has associated axiom(nl): b is an occurrent entity iff b is an entity that has temporal parts. (axiom label in BFO2 Reference: [079-001])
has associated axiom(fol): (forall (x) (if (Occurrent x) (exists (r) (and (SpatioTemporalRegion r) (occupiesSpatioTemporalRegion x r))))) // axiom label in BFO2 CLIF: [108-001]
has associated axiom(fol): (forall (x) (iff (Occurrent x) (and (Entity x) (exists (y) (temporalPartOf y x))))) // axiom label in BFO2 CLIF: [079-001]

Axiom
annotated source: occurrent
annotated property: editor note
annotated target: Occurrent doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. An example would be the sum of a process and the process boundary of another process.
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000006
comment: per discussion with Barry Smith

Axiom
annotated source: occurrent
annotated property: editor note
annotated target: Simons uses different terminology for relations of occurrents to regions: Denote the spatio-temporal location of a given occurrent e by 'spn[e]' and call this region its span. We may say an occurrent is at its span, in any larger region, and covers any smaller region. Now suppose we have fixed a frame of reference so that we can speak not merely of spatio-temporal but also of spatial regions (places) and temporal regions (times). The spread of an occurrent, (relative to a frame of reference) is the space it exactly occupies, and its spell is likewise the time it exactly occupies. We write 'spr[e]' and `spl[e]' respectively for the spread and spell of e, omitting mention of the frame.
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000012

Axiom
annotated source: occurrent
annotated property: elucidation
annotated target: An occurrent is an entity that unfolds itself in time or it is the instantaneous boundary of such an entity (for example a beginning or an ending) or it is a temporal or spatiotemporal region which such an entity occupies_temporal_region or occupies_spatiotemporal_region. (axiom label in BFO2 Reference: [077-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/077-002

Axiom
annotated source: occurrent
annotated property: has associated axiom(nl)
annotated target: Every occurrent occupies_spatiotemporal_region some spatiotemporal region. (axiom label in BFO2 Reference: [108-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/108-001

Axiom
annotated source: occurrent
annotated property: has associated axiom(nl)
annotated target: b is an occurrent entity iff b is an entity that has temporal parts. (axiom label in BFO2 Reference: [079-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/079-001

Axiom
annotated source: occurrent
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Occurrent x) (exists (r) (and (SpatioTemporalRegion r) (occupiesSpatioTemporalRegion x r))))) // axiom label in BFO2 CLIF: [108-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/108-001

Axiom
annotated source: occurrent
annotated property: has associated axiom(fol)
annotated target: (forall (x) (iff (Occurrent x) (and (Entity x) (exists (y) (temporalPartOf y x))))) // axiom label in BFO2 CLIF: [079-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/079-001

independent continuant
type: Class
subclass of: continuant
disjoint with: specifically dependent continuant
disjoint with: generically dependent continuant
BFO OWL specification label: ic
BFO CLIF specification label: IndependentContinuant
example of usage: a chair
example of usage: a heart
example of usage: a leg
example of usage: a molecule
example of usage: a spatial region
example of usage: an atom
example of usage: an orchestra.
example of usage: an organism
example of usage: the bottom right portion of a human torso
example of usage: the interior of your mouth
definition: A continuant that is a bearer of quality and realizable entity entities, in which other entities inhere and which itself cannot inhere in anything.
definition: b is an independent continuant = Def. b is a continuant which is such that there is no c and no t such that b s-depends_on c at t. (axiom label in BFO2 Reference: [017-002])
has associated axiom(nl): For any independent continuant b and any time t there is some spatial region r such that b is located_in r at t. (axiom label in BFO2 Reference: [134-001])
has associated axiom(nl): For every independent continuant b and time t during the region of time spanned by its life, there are entities which s-depends_on b during t. (axiom label in BFO2 Reference: [018-002])
has associated axiom(fol): (forall (x t) (if (IndependentContinuant x) (exists (r) (and (SpatialRegion r) (locatedInAt x r t))))) // axiom label in BFO2 CLIF: [134-001]
has associated axiom(fol): (forall (x t) (if (and (IndependentContinuant x) (existsAt x t)) (exists (y) (and (Entity y) (specificallyDependsOnAt y x t))))) // axiom label in BFO2 CLIF: [018-002]
has associated axiom(fol): (iff (IndependentContinuant a) (and (Continuant a) (not (exists (b t) (specificallyDependsOnAt a b t))))) // axiom label in BFO2 CLIF: [017-002]

Axiom
annotated source: independent continuant
annotated property: definition
annotated target: b is an independent continuant = Def. b is a continuant which is such that there is no c and no t such that b s-depends_on c at t. (axiom label in BFO2 Reference: [017-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/017-002

Axiom
annotated source: independent continuant
annotated property: has associated axiom(nl)
annotated target: For any independent continuant b and any time t there is some spatial region r such that b is located_in r at t. (axiom label in BFO2 Reference: [134-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/134-001

Axiom
annotated source: independent continuant
annotated property: has associated axiom(nl)
annotated target: For every independent continuant b and time t during the region of time spanned by its life, there are entities which s-depends_on b during t. (axiom label in BFO2 Reference: [018-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/018-002

Axiom
annotated source: independent continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x t) (if (IndependentContinuant x) (exists (r) (and (SpatialRegion r) (locatedInAt x r t))))) // axiom label in BFO2 CLIF: [134-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/134-001

Axiom
annotated source: independent continuant
annotated property: has associated axiom(fol)
annotated target: (forall (x t) (if (and (IndependentContinuant x) (existsAt x t)) (exists (y) (and (Entity y) (specificallyDependsOnAt y x t))))) // axiom label in BFO2 CLIF: [018-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/018-002

Axiom
annotated source: independent continuant
annotated property: has associated axiom(fol)
annotated target: (iff (IndependentContinuant a) (and (Continuant a) (not (exists (b t) (specificallyDependsOnAt a b t))))) // axiom label in BFO2 CLIF: [017-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/017-002

spatial region
type: Class
subclass of: immaterial entity
disjoint with: site
BFO OWL specification label: s-region
BFO CLIF specification label: SpatialRegion
editor note: BFO 2 Reference: Spatial regions do not participate in processes.
editor note: Spatial region doesn't have a closure axiom because the subclasses don't exhaust all possibilites. An example would be the union of a spatial point and a spatial line that doesn't overlap the point, or two spatial lines that intersect at a single point. In both cases the resultant spatial region is neither 0-dimensional, 1-dimensional, 2-dimensional, or 3-dimensional.
elucidation: A spatial region is a continuant entity that is a continuant_part_of spaceR as defined relative to some frame R. (axiom label in BFO2 Reference: [035-001])
has associated axiom(nl): All continuant parts of spatial regions are spatial regions. (axiom label in BFO2 Reference: [036-001])
has associated axiom(fol): (forall (x y t) (if (and (SpatialRegion x) (continuantPartOfAt y x t)) (SpatialRegion y))) // axiom label in BFO2 CLIF: [036-001]
has associated axiom(fol): (forall (x) (if (SpatialRegion x) (Continuant x))) // axiom label in BFO2 CLIF: [035-001]

Axiom
annotated source: spatial region
annotated property: editor note
annotated target: Spatial region doesn't have a closure axiom because the subclasses don't exhaust all possibilites. An example would be the union of a spatial point and a spatial line that doesn't overlap the point, or two spatial lines that intersect at a single point. In both cases the resultant spatial region is neither 0-dimensional, 1-dimensional, 2-dimensional, or 3-dimensional.
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000002
comment: per discussion with Barry Smith

Axiom
annotated source: spatial region
annotated property: elucidation
annotated target: A spatial region is a continuant entity that is a continuant_part_of spaceR as defined relative to some frame R. (axiom label in BFO2 Reference: [035-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/035-001

Axiom
annotated source: spatial region
annotated property: has associated axiom(nl)
annotated target: All continuant parts of spatial regions are spatial regions. (axiom label in BFO2 Reference: [036-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/036-001

Axiom
annotated source: spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x y t) (if (and (SpatialRegion x) (continuantPartOfAt y x t)) (SpatialRegion y))) // axiom label in BFO2 CLIF: [036-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/036-001

Axiom
annotated source: spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (SpatialRegion x) (Continuant x))) // axiom label in BFO2 CLIF: [035-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/035-001

temporal region
type: Class
subclass of: occurrent
disjoint with: spatiotemporal region
disjoint with: process
disjoint with: process boundary
BFO OWL specification label: t-region
BFO CLIF specification label: TemporalRegion
editor note: Temporal region doesn't have a closure axiom because the subclasses don't exhaust all possibilites. An example would be the mereological sum of a temporal instant and a temporal interval that doesn't overlap the instant. In this case the resultant temporal region is neither 0-dimensional nor 1-dimensional
elucidation: A temporal region is an occurrent entity that is part of time as defined relative to some reference frame. (axiom label in BFO2 Reference: [100-001])
has associated axiom(nl): All parts of temporal regions are temporal regions. (axiom label in BFO2 Reference: [101-001])
has associated axiom(nl): Every temporal region t is such that t occupies_temporal_region t. (axiom label in BFO2 Reference: [119-002])
has associated axiom(fol): (forall (r) (if (TemporalRegion r) (occupiesTemporalRegion r r))) // axiom label in BFO2 CLIF: [119-002]
has associated axiom(fol): (forall (x y) (if (and (TemporalRegion x) (occurrentPartOf y x)) (TemporalRegion y))) // axiom label in BFO2 CLIF: [101-001]
has associated axiom(fol): (forall (x) (if (TemporalRegion x) (Occurrent x))) // axiom label in BFO2 CLIF: [100-001]

Axiom
annotated source: temporal region
annotated property: editor note
annotated target: Temporal region doesn't have a closure axiom because the subclasses don't exhaust all possibilites. An example would be the mereological sum of a temporal instant and a temporal interval that doesn't overlap the instant. In this case the resultant temporal region is neither 0-dimensional nor 1-dimensional
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000003
comment: per discussion with Barry Smith

Axiom
annotated source: temporal region
annotated property: elucidation
annotated target: A temporal region is an occurrent entity that is part of time as defined relative to some reference frame. (axiom label in BFO2 Reference: [100-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/100-001

Axiom
annotated source: temporal region
annotated property: has associated axiom(nl)
annotated target: All parts of temporal regions are temporal regions. (axiom label in BFO2 Reference: [101-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/101-001

Axiom
annotated source: temporal region
annotated property: has associated axiom(nl)
annotated target: Every temporal region t is such that t occupies_temporal_region t. (axiom label in BFO2 Reference: [119-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/119-002

Axiom
annotated source: temporal region
annotated property: has associated axiom(fol)
annotated target: (forall (r) (if (TemporalRegion r) (occupiesTemporalRegion r r))) // axiom label in BFO2 CLIF: [119-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/119-002

Axiom
annotated source: temporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x y) (if (and (TemporalRegion x) (occurrentPartOf y x)) (TemporalRegion y))) // axiom label in BFO2 CLIF: [101-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/101-001

Axiom
annotated source: temporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (TemporalRegion x) (Occurrent x))) // axiom label in BFO2 CLIF: [100-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/100-001

two-dimensional spatial region
type: Class
subclass of: spatial region
disjoint with: three-dimensional spatial region
BFO OWL specification label: 2d-s-region
BFO CLIF specification label: TwoDimensionalSpatialRegion
example of usage: an infinitely thin plane in space.
example of usage: the surface of a sphere-shaped part of space
elucidation: A two-dimensional spatial region is a spatial region that is of two dimensions. (axiom label in BFO2 Reference: [039-001])
has associated axiom(fol): (forall (x) (if (TwoDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [039-001]

Axiom
annotated source: two-dimensional spatial region
annotated property: elucidation
annotated target: A two-dimensional spatial region is a spatial region that is of two dimensions. (axiom label in BFO2 Reference: [039-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/039-001

Axiom
annotated source: two-dimensional spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (TwoDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [039-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/039-001

spatiotemporal region
type: Class
subclass of: occurrent
BFO OWL specification label: st-region
BFO CLIF specification label: SpatiotemporalRegion
example of usage: the spatiotemporal region occupied by a human life
example of usage: the spatiotemporal region occupied by a process of cellular meiosis.
example of usage: the spatiotemporal region occupied by the development of a cancer tumor
elucidation: A spatiotemporal region is an occurrent entity that is part of spacetime. (axiom label in BFO2 Reference: [095-001])
has associated axiom(nl): All parts of spatiotemporal regions are spatiotemporal regions. (axiom label in BFO2 Reference: [096-001])
has associated axiom(nl): Each spatiotemporal region at any time t projects_onto some spatial region at t. (axiom label in BFO2 Reference: [099-001])
has associated axiom(nl): Each spatiotemporal region projects_onto some temporal region. (axiom label in BFO2 Reference: [098-001])
has associated axiom(nl): Every spatiotemporal region occupies_spatiotemporal_region itself.
has associated axiom(nl): Every spatiotemporal region s is such that s occupies_spatiotemporal_region s. (axiom label in BFO2 Reference: [107-002])
has associated axiom(fol): (forall (r) (if (SpatioTemporalRegion r) (occupiesSpatioTemporalRegion r r))) // axiom label in BFO2 CLIF: [107-002]
has associated axiom(fol): (forall (x t) (if (SpatioTemporalRegion x) (exists (y) (and (SpatialRegion y) (spatiallyProjectsOntoAt x y t))))) // axiom label in BFO2 CLIF: [099-001]
has associated axiom(fol): (forall (x y) (if (and (SpatioTemporalRegion x) (occurrentPartOf y x)) (SpatioTemporalRegion y))) // axiom label in BFO2 CLIF: [096-001]
has associated axiom(fol): (forall (x) (if (SpatioTemporalRegion x) (Occurrent x))) // axiom label in BFO2 CLIF: [095-001]
has associated axiom(fol): (forall (x) (if (SpatioTemporalRegion x) (exists (y) (and (TemporalRegion y) (temporallyProjectsOnto x y))))) // axiom label in BFO2 CLIF: [098-001]

Axiom
annotated source: spatiotemporal region
annotated property: elucidation
annotated target: A spatiotemporal region is an occurrent entity that is part of spacetime. (axiom label in BFO2 Reference: [095-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/095-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(nl)
annotated target: All parts of spatiotemporal regions are spatiotemporal regions. (axiom label in BFO2 Reference: [096-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/096-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(nl)
annotated target: Each spatiotemporal region at any time t projects_onto some spatial region at t. (axiom label in BFO2 Reference: [099-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/099-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(nl)
annotated target: Each spatiotemporal region projects_onto some temporal region. (axiom label in BFO2 Reference: [098-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/098-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(nl)
annotated target: Every spatiotemporal region s is such that s occupies_spatiotemporal_region s. (axiom label in BFO2 Reference: [107-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/107-002

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(fol)
annotated target: (forall (r) (if (SpatioTemporalRegion r) (occupiesSpatioTemporalRegion r r))) // axiom label in BFO2 CLIF: [107-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/107-002

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x t) (if (SpatioTemporalRegion x) (exists (y) (and (SpatialRegion y) (spatiallyProjectsOntoAt x y t))))) // axiom label in BFO2 CLIF: [099-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/099-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x y) (if (and (SpatioTemporalRegion x) (occurrentPartOf y x)) (SpatioTemporalRegion y))) // axiom label in BFO2 CLIF: [096-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/096-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (SpatioTemporalRegion x) (Occurrent x))) // axiom label in BFO2 CLIF: [095-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/095-001

Axiom
annotated source: spatiotemporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (SpatioTemporalRegion x) (exists (y) (and (TemporalRegion y) (temporallyProjectsOnto x y))))) // axiom label in BFO2 CLIF: [098-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/098-001

process
type: Class
subclass of: occurrent
BFO OWL specification label: process
BFO CLIF specification label: Process
example of usage: a process of cell-division, \ a beating of the heart
example of usage: a process of meiosis
example of usage: a process of sleeping
example of usage: the course of a disease
example of usage: the flight of a bird
example of usage: the life of an organism
example of usage: your process of aging.
definition: An occurrent that has temporal proper parts and for some time t, p s-depends_on some material entity at t.
definition: p is a process = Def. p is an occurrent that has temporal proper parts and for some time t, p s-depends_on some material entity at t. (axiom label in BFO2 Reference: [083-003])
editor note: BFO 2 Reference: The realm of occurrents is less pervasively marked by the presence of natural units than is the case in the realm of independent continuants. Thus there is here no counterpart of ‘object’. In BFO 1.0 ‘process’ served as such a counterpart. In BFO 2.0 ‘process’ is, rather, the occurrent counterpart of ‘material entity’. Those natural – as contrasted with engineered, which here means: deliberately executed – units which do exist in the realm of occurrents are typically either parasitic on the existence of natural units on the continuant side, or they are fiat in nature. Thus we can count lives; we can count football games; we can count chemical reactions performed in experiments or in chemical manufacturing. We cannot count the processes taking place, for instance, in an episode of insect mating behavior.Even where natural units are identifiable, for example cycles in a cyclical process such as the beating of a heart or an organism’s sleep/wake cycle, the processes in question form a sequence with no discontinuities (temporal gaps) of the sort that we find for instance where billiard balls or zebrafish or planets are separated by clear spatial gaps. Lives of organisms are process units, but they too unfold in a continuous series from other, prior processes such as fertilization, and they unfold in turn in continuous series of post-life processes such as post-mortem decay. Clear examples of boundaries of processes are almost always of the fiat sort (midnight, a time of death as declared in an operating theater or on a death certificate, the initiation of a state of war)
has associated axiom(fol): (iff (Process a) (and (Occurrent a) (exists (b) (properTemporalPartOf b a)) (exists (c t) (and (MaterialEntity c) (specificallyDependsOnAt a c t))))) // axiom label in BFO2 CLIF: [083-003]

Axiom
annotated source: process
annotated property: definition
annotated target: p is a process = Def. p is an occurrent that has temporal proper parts and for some time t, p s-depends_on some material entity at t. (axiom label in BFO2 Reference: [083-003])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/083-003

Axiom
annotated source: process
annotated property: has associated axiom(fol)
annotated target: (iff (Process a) (and (Occurrent a) (exists (b) (properTemporalPartOf b a)) (exists (c t) (and (MaterialEntity c) (specificallyDependsOnAt a c t))))) // axiom label in BFO2 CLIF: [083-003]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/083-003

realizable entity
type: Class
subclass of: specifically dependent continuant
disjoint with: quality
BFO OWL specification label: realizable
BFO CLIF specification label: RealizableEntity
example of usage: the disposition of this piece of metal to conduct electricity.
example of usage: the disposition of your blood to coagulate
example of usage: the function of your reproductive organs
example of usage: the role of being a doctor
example of usage: the role of this boundary to delineate where Utah and Colorado meet
definition: A specifically dependent continuant that inheres in continuant entities and are not exhibited in full at every time in which it inheres in an entity or group of entities. The exhibition or actualization of a realizable entity is a particular manifestation, functioning or process that occurs under certain circumstances.
elucidation: To say that b is a realizable entity is to say that b is a specifically dependent continuant that inheres in some independent continuant which is not a spatial region and is of a type instances of which are realized in processes of a correlated type. (axiom label in BFO2 Reference: [058-002])
has associated axiom(nl): All realizable dependent continuants have independent continuants that are not spatial regions as their bearers. (axiom label in BFO2 Reference: [060-002])
has associated axiom(fol): (forall (x t) (if (RealizableEntity x) (exists (y) (and (IndependentContinuant y) (not (SpatialRegion y)) (bearerOfAt y x t))))) // axiom label in BFO2 CLIF: [060-002]
has associated axiom(fol): (forall (x) (if (RealizableEntity x) (and (SpecificallyDependentContinuant x) (exists (y) (and (IndependentContinuant y) (not (SpatialRegion y)) (inheresIn x y)))))) // axiom label in BFO2 CLIF: [058-002]

Axiom
annotated source: realizable entity
annotated property: elucidation
annotated target: To say that b is a realizable entity is to say that b is a specifically dependent continuant that inheres in some independent continuant which is not a spatial region and is of a type instances of which are realized in processes of a correlated type. (axiom label in BFO2 Reference: [058-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/058-002

Axiom
annotated source: realizable entity
annotated property: has associated axiom(nl)
annotated target: All realizable dependent continuants have independent continuants that are not spatial regions as their bearers. (axiom label in BFO2 Reference: [060-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/060-002

Axiom
annotated source: realizable entity
annotated property: has associated axiom(fol)
annotated target: (forall (x t) (if (RealizableEntity x) (exists (y) (and (IndependentContinuant y) (not (SpatialRegion y)) (bearerOfAt y x t))))) // axiom label in BFO2 CLIF: [060-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/060-002

Axiom
annotated source: realizable entity
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (RealizableEntity x) (and (SpecificallyDependentContinuant x) (exists (y) (and (IndependentContinuant y) (not (SpatialRegion y)) (inheresIn x y)))))) // axiom label in BFO2 CLIF: [058-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/058-002

zero-dimensional spatial region
type: Class
subclass of: spatial region
disjoint with: three-dimensional spatial region
BFO OWL specification label: 0d-s-region
BFO CLIF specification label: ZeroDimensionalSpatialRegion
elucidation: A zero-dimensional spatial region is a point in space. (axiom label in BFO2 Reference: [037-001])
has associated axiom(fol): (forall (x) (if (ZeroDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [037-001]

Axiom
annotated source: zero-dimensional spatial region
annotated property: elucidation
annotated target: A zero-dimensional spatial region is a point in space. (axiom label in BFO2 Reference: [037-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/037-001

Axiom
annotated source: zero-dimensional spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (ZeroDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [037-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/037-001

quality
type: Class
subclass of: specifically dependent continuant
BFO OWL specification label: quality
BFO CLIF specification label: Quality
example of usage: the ambient temperature of this portion of air
example of usage: the color of a tomato
example of usage: the length of the circumference of your waist
example of usage: the mass of this piece of gold.
example of usage: the shape of your nose
example of usage: the shape of your nostril
elucidation: a quality is a specifically dependent continuant that, in contrast to roles and dispositions, does not require any further process in order to be realized. (axiom label in BFO2 Reference: [055-001])
has associated axiom(nl): If an entity is a quality at any time that it exists, then it is a quality at every time that it exists. (axiom label in BFO2 Reference: [105-001])
has associated axiom(fol): (forall (x) (if (Quality x) (SpecificallyDependentContinuant x))) // axiom label in BFO2 CLIF: [055-001]
has associated axiom(fol): (forall (x) (if (exists (t) (and (existsAt x t) (Quality x))) (forall (t_1) (if (existsAt x t_1) (Quality x))))) // axiom label in BFO2 CLIF: [105-001]

Axiom
annotated source: quality
annotated property: elucidation
annotated target: a quality is a specifically dependent continuant that, in contrast to roles and dispositions, does not require any further process in order to be realized. (axiom label in BFO2 Reference: [055-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/055-001

Axiom
annotated source: quality
annotated property: has associated axiom(nl)
annotated target: If an entity is a quality at any time that it exists, then it is a quality at every time that it exists. (axiom label in BFO2 Reference: [105-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/105-001

Axiom
annotated source: quality
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Quality x) (SpecificallyDependentContinuant x))) // axiom label in BFO2 CLIF: [055-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/055-001

Axiom
annotated source: quality
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (exists (t) (and (existsAt x t) (Quality x))) (forall (t_1) (if (existsAt x t_1) (Quality x))))) // axiom label in BFO2 CLIF: [105-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/105-001

specifically dependent continuant
type: Class
subclass of: continuant
disjoint with: generically dependent continuant
BFO OWL specification label: sdc
BFO CLIF specification label: SpecificallyDependentContinuant
example of usage: Reciprocal specifically dependent continuants: the function of this key to open this lock and the mutually dependent disposition of this lock: to be opened by this key
example of usage: of one-sided specifically dependent continuants: the mass of this tomato
example of usage: of relational dependent continuants (multiple bearers): John’s love for Mary, the ownership relation between John and this statue, the relation of authority between John and his subordinates.
example of usage: the disposition of this fish to decay
example of usage: the function of this heart: to pump blood
example of usage: the mutual dependence of proton donors and acceptors in chemical reactions [79
example of usage: the mutual dependence of the role predator and the role prey as played by two organisms in a given interaction
example of usage: the pink color of a medium rare piece of grilled filet mignon at its center
example of usage: the role of being a doctor
example of usage: the shape of this hole.
example of usage: the smell of this portion of mozzarella
definition: A continuant that inheres in or is borne by other entities. Every instance of A requires some specific instance of B which must always be the same.
definition: b is a specifically dependent continuant = Def. b is a continuant & there is some independent continuant c which is not a spatial region and which is such that b s-depends_on c at every time t during the course of b’s existence. (axiom label in BFO2 Reference: [050-003])
editor note: Specifically dependent continuant doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. We're not sure what else will develop here, but for example there are questions such as what are promises, obligation, etc.
has associated axiom(fol): (iff (SpecificallyDependentContinuant a) (and (Continuant a) (forall (t) (if (existsAt a t) (exists (b) (and (IndependentContinuant b) (not (SpatialRegion b)) (specificallyDependsOnAt a b t))))))) // axiom label in BFO2 CLIF: [050-003]

Axiom
annotated source: specifically dependent continuant
annotated property: definition
annotated target: b is a specifically dependent continuant = Def. b is a continuant & there is some independent continuant c which is not a spatial region and which is such that b s-depends_on c at every time t during the course of b’s existence. (axiom label in BFO2 Reference: [050-003])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/050-003

Axiom
annotated source: specifically dependent continuant
annotated property: editor note
annotated target: Specifically dependent continuant doesn't have a closure axiom because the subclasses don't necessarily exhaust all possibilites. We're not sure what else will develop here, but for example there are questions such as what are promises, obligation, etc.
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000005
comment: per discussion with Barry Smith

Axiom
annotated source: specifically dependent continuant
annotated property: has associated axiom(fol)
annotated target: (iff (SpecificallyDependentContinuant a) (and (Continuant a) (forall (t) (if (existsAt a t) (exists (b) (and (IndependentContinuant b) (not (SpatialRegion b)) (specificallyDependsOnAt a b t))))))) // axiom label in BFO2 CLIF: [050-003]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/050-003

role
type: Class
subclass of: realizable entity
BFO OWL specification label: role
BFO CLIF specification label: Role
example of usage: John’s role of husband to Mary is dependent on Mary’s role of wife to John, and both are dependent on the object aggregate comprising John and Mary as member parts joined together through the relational quality of being married.
example of usage: the priest role
example of usage: the role of a boundary to demarcate two neighboring administrative territories
example of usage: the role of a building in serving as a military target
example of usage: the role of a stone in marking a property boundary
example of usage: the role of subject in a clinical trial
example of usage: the student role
definition: A realizable entity the manifestation of which brings about some result or end that is not essential to a continuant in virtue of the kind of thing that it is but that can be served or participated in by that kind of continuant in some kinds of natural, social or institutional contexts.
editor note: BFO 2 Reference: One major family of examples of non-rigid universals involves roles, and ontologies developed for corresponding administrative purposes may consist entirely of representatives of entities of this sort. Thus ‘professor’, defined as follows,b instance_of professor at t =Def. there is some c, c instance_of professor role & c inheres_in b at t.denotes a non-rigid universal and so also do ‘nurse’, ‘student’, ‘colonel’, ‘taxpayer’, and so forth. (These terms are all, in the jargon of philosophy, phase sortals.) By using role terms in definitions, we can create a BFO conformant treatment of such entities drawing on the fact that, while an instance of professor may be simultaneously an instance of trade union member, no instance of the type professor role is also (at any time) an instance of the type trade union member role (any more than any instance of the type color is at any time an instance of the type length).If an ontology of employment positions should be defined in terms of roles following the above pattern, this enables the ontology to do justice to the fact that individuals instantiate the corresponding universals – professor, sergeant, nurse – only during certain phases in their lives.
elucidation: b is a role means: b is a realizable entity & b exists because there is some single bearer that is in some special physical, social, or institutional set of circumstances in which this bearer does not have to be& b is not such that, if it ceases to exist, then the physical make-up of the bearer is thereby changed. (axiom label in BFO2 Reference: [061-001])
has associated axiom(fol): (forall (x) (if (Role x) (RealizableEntity x))) // axiom label in BFO2 CLIF: [061-001]

Axiom
annotated source: role
annotated property: elucidation
annotated target: b is a role means: b is a realizable entity & b exists because there is some single bearer that is in some special physical, social, or institutional set of circumstances in which this bearer does not have to be& b is not such that, if it ceases to exist, then the physical make-up of the bearer is thereby changed. (axiom label in BFO2 Reference: [061-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/061-001

Axiom
annotated source: role
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Role x) (RealizableEntity x))) // axiom label in BFO2 CLIF: [061-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/061-001

one-dimensional spatial region
type: Class
subclass of: spatial region
disjoint with: three-dimensional spatial region
BFO OWL specification label: 1d-s-region
BFO CLIF specification label: OneDimensionalSpatialRegion
example of usage: an edge of a cube-shaped portion of space.
elucidation: A one-dimensional spatial region is a line or aggregate of lines stretching from one point in space to another. (axiom label in BFO2 Reference: [038-001])
has associated axiom(fol): (forall (x) (if (OneDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [038-001]

Axiom
annotated source: one-dimensional spatial region
annotated property: elucidation
annotated target: A one-dimensional spatial region is a line or aggregate of lines stretching from one point in space to another. (axiom label in BFO2 Reference: [038-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/038-001

Axiom
annotated source: one-dimensional spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (OneDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [038-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/038-001

BFO_0000027
type: Class
subclass of: material entity
BFO OWL specification label: object-aggregate
BFO CLIF specification label: ObjectAggregate
example of usage: a collection of cells in a blood biobank.
example of usage: a swarm of bees is an aggregate of members who are linked together through natural bonds
example of usage: a symphony orchestra
example of usage: an organization is an aggregate whose member parts have roles of specific types (for example in a jazz band, a chess club, a football team)
example of usage: defined by fiat: the aggregate of members of an organization
example of usage: defined through physical attachment: the aggregate of atoms in a lump of granite
example of usage: defined through physical containment: the aggregate of molecules of carbon dioxide in a sealed container
example of usage: defined via attributive delimitations such as: the patients in this hospital
example of usage: the aggregate of bearings in a constant velocity axle joint
example of usage: the aggregate of blood cells in your body
example of usage: the nitrogen atoms in the atmosphere
example of usage: the restaurants in Palo Alto
example of usage: your collection of Meissen ceramic plates.
editor note: An entity a is an object aggregate if and only if there is a mutually exhaustive and pairwise disjoint partition of a into objects
editor note: BFO 2 Reference: object aggregates may gain and lose parts while remaining numerically identical (one and the same individual) over time. This holds both for aggregates whose membership is determined naturally (the aggregate of cells in your body) and aggregates determined by fiat (a baseball team, a congressional committee).
definition source: ISBN:978-3-938793-98-5pp124-158#Thomas Bittner and Barry Smith, 'A Theory of Granular Partitions', in K. Munn and B. Smith (eds.), Applied Ontology: An Introduction, Frankfurt/Lancaster: ontos, 2008, 125-158.
elucidation: b is an object aggregate means: b is a material entity consisting exactly of a plurality of objects as member_parts at all times at which b exists. (axiom label in BFO2 Reference: [025-004])
has associated axiom(fol): (forall (x) (if (ObjectAggregate x) (and (MaterialEntity x) (forall (t) (if (existsAt x t) (exists (y z) (and (Object y) (Object z) (memberPartOfAt y x t) (memberPartOfAt z x t) (not (= y z)))))) (not (exists (w t_1) (and (memberPartOfAt w x t_1) (not (Object w)))))))) // axiom label in BFO2 CLIF: [025-004]

Axiom
annotated source: BFO_0000027
annotated property: editor note
annotated target: An entity a is an object aggregate if and only if there is a mutually exhaustive and pairwise disjoint partition of a into objects
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000011

Axiom
annotated source: BFO_0000027
annotated property: editor note
annotated target: An entity a is an object aggregate if and only if there is a mutually exhaustive and pairwise disjoint partition of a into objects
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000301

Axiom
annotated source: BFO_0000027
annotated property: definition source
annotated target: ISBN:978-3-938793-98-5pp124-158#Thomas Bittner and Barry Smith, 'A Theory of Granular Partitions', in K. Munn and B. Smith (eds.), Applied Ontology: An Introduction, Frankfurt/Lancaster: ontos, 2008, 125-158.
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/0000300

Axiom
annotated source: BFO_0000027
annotated property: elucidation
annotated target: b is an object aggregate means: b is a material entity consisting exactly of a plurality of objects as member_parts at all times at which b exists. (axiom label in BFO2 Reference: [025-004])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/025-004

Axiom
annotated source: BFO_0000027
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (ObjectAggregate x) (and (MaterialEntity x) (forall (t) (if (existsAt x t) (exists (y z) (and (Object y) (Object z) (memberPartOfAt y x t) (memberPartOfAt z x t) (not (= y z)))))) (not (exists (w t_1) (and (memberPartOfAt w x t_1) (not (Object w)))))))) // axiom label in BFO2 CLIF: [025-004]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/025-004

three-dimensional spatial region
type: Class
subclass of: spatial region
BFO OWL specification label: 3d-s-region
BFO CLIF specification label: ThreeDimensionalSpatialRegion
example of usage: a cube-shaped region of space
example of usage: a sphere-shaped region of space,
elucidation: A three-dimensional spatial region is a spatial region that is of three dimensions. (axiom label in BFO2 Reference: [040-001])
has associated axiom(fol): (forall (x) (if (ThreeDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [040-001]

Axiom
annotated source: three-dimensional spatial region
annotated property: elucidation
annotated target: A three-dimensional spatial region is a spatial region that is of three dimensions. (axiom label in BFO2 Reference: [040-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/040-001

Axiom
annotated source: three-dimensional spatial region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (ThreeDimensionalSpatialRegion x) (SpatialRegion x))) // axiom label in BFO2 CLIF: [040-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/040-001

site
type: Class
subclass of: immaterial entity
BFO OWL specification label: site
BFO CLIF specification label: Site
example of usage: Manhattan Canyon)
example of usage: a hole in the interior of a portion of cheese
example of usage: a rabbit hole
example of usage: an air traffic control region defined in the airspace above an airport
example of usage: the Grand Canyon
example of usage: the Piazza San Marco
example of usage: the cockpit of an aircraft
example of usage: the hold of a ship
example of usage: the interior of a kangaroo pouch
example of usage: the interior of the trunk of your car
example of usage: the interior of your bedroom
example of usage: the interior of your office
example of usage: the interior of your refrigerator
example of usage: the lumen of your gut
example of usage: your left nostril (a fiat part – the opening – of your left nasal cavity)
elucidation: b is a site means: b is a three-dimensional immaterial entity that is (partially or wholly) bounded by a material entity or it is a three-dimensional immaterial part thereof. (axiom label in BFO2 Reference: [034-002])
has associated axiom(fol): (forall (x) (if (Site x) (ImmaterialEntity x))) // axiom label in BFO2 CLIF: [034-002]

Axiom
annotated source: site
annotated property: elucidation
annotated target: b is a site means: b is a three-dimensional immaterial entity that is (partially or wholly) bounded by a material entity or it is a three-dimensional immaterial part thereof. (axiom label in BFO2 Reference: [034-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/034-002

Axiom
annotated source: site
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (Site x) (ImmaterialEntity x))) // axiom label in BFO2 CLIF: [034-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/034-002

object
type: Class
subclass of: material entity
BFO OWL specification label: object
BFO CLIF specification label: Object
example of usage: atom
example of usage: cell
example of usage: cells and organisms
example of usage: engineered artifacts
example of usage: grain of sand
example of usage: molecule
example of usage: organelle
example of usage: organism
example of usage: planet
example of usage: solid portions of matter
example of usage: star
editor note: BFO 2 Reference: BFO rests on the presupposition that at multiple micro-, meso- and macroscopic scales reality exhibits certain stable, spatially separated or separable material units, combined or combinable into aggregates of various sorts (for example organisms into what are called ‘populations’). Such units play a central role in almost all domains of natural science from particle physics to cosmology. Many scientific laws govern the units in question, employing general terms (such as ‘molecule’ or ‘planet’) referring to the types and subtypes of units, and also to the types and subtypes of the processes through which such units develop and interact. The division of reality into such natural units is at the heart of biological science, as also is the fact that these units may form higher-level units (as cells form multicellular organisms) and that they may also form aggregates of units, for example as cells form portions of tissue and organs form families, herds, breeds, species, and so on. At the same time, the division of certain portions of reality into engineered units (manufactured artifacts) is the basis of modern industrial technology, which rests on the distributed mass production of engineered parts through division of labor and on their assembly into larger, compound units such as cars and laptops. The division of portions of reality into units is one starting point for the phenomenon of counting.
editor note: BFO 2 Reference: Each object is such that there are entities of which we can assert unproblematically that they lie in its interior, and other entities of which we can assert unproblematically that they lie in its exterior. This may not be so for entities lying at or near the boundary between the interior and exterior. This means that two objects – for example the two cells depicted in Figure 3 – may be such that there are material entities crossing their boundaries which belong determinately to neither cell. Something similar obtains in certain cases of conjoined twins (see below).
editor note: BFO 2 Reference: To say that b is causally unified means: b is a material entity which is such that its material parts are tied together in such a way that, in environments typical for entities of the type in question,if c, a continuant part of b that is in the interior of b at t, is larger than a certain threshold size (which will be determined differently from case to case, depending on factors such as porosity of external cover) and is moved in space to be at t at a location on the exterior of the spatial region that had been occupied by b at t, then either b’s other parts will be moved in coordinated fashion or b will be damaged (be affected, for example, by breakage or tearing) in the interval between t and t.causal changes in one part of b can have consequences for other parts of b without the mediation of any entity that lies on the exterior of b. Material entities with no proper material parts would satisfy these conditions trivially. Candidate examples of types of causal unity for material entities of more complex sorts are as follows (this is not intended to be an exhaustive list):CU1: Causal unity via physical coveringHere the parts in the interior of the unified entity are combined together causally through a common membrane or other physical covering\. The latter points outwards toward and may serve a protective function in relation to what lies on the exterior of the entity [13, 47
editor note: BFO 2 Reference: an object is a maximal causally unified material entity
editor note: BFO 2 Reference: ‘objects’ are sometimes referred to as ‘grains’ [74
elucidation: b is an object means: b is a material entity which manifests causal unity of one or other of the types CUn listed above & is of a type (a material universal) instances of which are maximal relative to this criterion of causal unity. (axiom label in BFO2 Reference: [024-001])

Axiom
annotated source: object
annotated property: elucidation
annotated target: b is an object means: b is a material entity which manifests causal unity of one or other of the types CUn listed above & is of a type (a material universal) instances of which are maximal relative to this criterion of causal unity. (axiom label in BFO2 Reference: [024-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/024-001

generically dependent continuant
type: Class
subclass of: continuant
BFO OWL specification label: gdc
BFO CLIF specification label: GenericallyDependentContinuant
example of usage: The entries in your database are patterns instantiated as quality instances in your hard drive. The database itself is an aggregate of such patterns. When you create the database you create a particular instance of the generically dependent continuant type database. Each entry in the database is an instance of the generically dependent continuant type IAO: information content entity.
example of usage: the pdf file on your laptop, the pdf file that is a copy thereof on my laptop
example of usage: the sequence of this protein molecule; the sequence that is a copy thereof in that protein molecule.
definition: A continuant that is dependent on one or other independent continuant bearers. For every instance of A requires some instance of (an independent continuant type) B but which instance of B serves can change from time to time.
definition: b is a generically dependent continuant = Def. b is a continuant that g-depends_on one or more other entities. (axiom label in BFO2 Reference: [074-001])
has associated axiom(fol): (iff (GenericallyDependentContinuant a) (and (Continuant a) (exists (b t) (genericallyDependsOnAt a b t)))) // axiom label in BFO2 CLIF: [074-001]

Axiom
annotated source: generically dependent continuant
annotated property: definition
annotated target: b is a generically dependent continuant = Def. b is a continuant that g-depends_on one or more other entities. (axiom label in BFO2 Reference: [074-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/074-001

Axiom
annotated source: generically dependent continuant
annotated property: has associated axiom(fol)
annotated target: (iff (GenericallyDependentContinuant a) (and (Continuant a) (exists (b t) (genericallyDependsOnAt a b t)))) // axiom label in BFO2 CLIF: [074-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/074-001

process boundary
type: Class
subclass of: occurrent
BFO OWL specification label: p-boundary
BFO CLIF specification label: ProcessBoundary
example of usage: the boundary between the 2nd and 3rd year of your life.
definition: p is a process boundary =Def. p is a temporal part of a process & p has no proper temporal parts. (axiom label in BFO2 Reference: [084-001])
has associated axiom(nl): Every process boundary occupies_temporal_region a zero-dimensional temporal region. (axiom label in BFO2 Reference: [085-002])
has associated axiom(fol): (forall (x) (if (ProcessBoundary x) (exists (y) (and (ZeroDimensionalTemporalRegion y) (occupiesTemporalRegion x y))))) // axiom label in BFO2 CLIF: [085-002]
has associated axiom(fol): (iff (ProcessBoundary a) (exists (p) (and (Process p) (temporalPartOf a p) (not (exists (b) (properTemporalPartOf b a)))))) // axiom label in BFO2 CLIF: [084-001]

Axiom
annotated source: process boundary
annotated property: definition
annotated target: p is a process boundary =Def. p is a temporal part of a process & p has no proper temporal parts. (axiom label in BFO2 Reference: [084-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/084-001

Axiom
annotated source: process boundary
annotated property: has associated axiom(nl)
annotated target: Every process boundary occupies_temporal_region a zero-dimensional temporal region. (axiom label in BFO2 Reference: [085-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/085-002

Axiom
annotated source: process boundary
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (ProcessBoundary x) (exists (y) (and (ZeroDimensionalTemporalRegion y) (occupiesTemporalRegion x y))))) // axiom label in BFO2 CLIF: [085-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/085-002

Axiom
annotated source: process boundary
annotated property: has associated axiom(fol)
annotated target: (iff (ProcessBoundary a) (exists (p) (and (Process p) (temporalPartOf a p) (not (exists (b) (properTemporalPartOf b a)))))) // axiom label in BFO2 CLIF: [084-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/084-001

one-dimensional temporal region
type: Class
subclass of: temporal region
disjoint with: zero-dimensional temporal region
BFO OWL specification label: 1d-t-region
BFO CLIF specification label: OneDimensionalTemporalRegion
example of usage: the temporal region during which a process occurs.
editor note: BFO 2 Reference: A temporal interval is a special kind of one-dimensional temporal region, namely one that is self-connected (is without gaps or breaks).
elucidation: A one-dimensional temporal region is a temporal region that is extended. (axiom label in BFO2 Reference: [103-001])
has associated axiom(fol): (forall (x) (if (OneDimensionalTemporalRegion x) (TemporalRegion x))) // axiom label in BFO2 CLIF: [103-001]

Axiom
annotated source: one-dimensional temporal region
annotated property: elucidation
annotated target: A one-dimensional temporal region is a temporal region that is extended. (axiom label in BFO2 Reference: [103-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/103-001

Axiom
annotated source: one-dimensional temporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (OneDimensionalTemporalRegion x) (TemporalRegion x))) // axiom label in BFO2 CLIF: [103-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/103-001

material entity
type: Class
subclass of: independent continuant
disjoint with: immaterial entity
BFO OWL specification label: material
BFO CLIF specification label: MaterialEntity
example of usage: a flame
example of usage: a forest fire
example of usage: a human being
example of usage: a hurricane
example of usage: a photon
example of usage: a puff of smoke
example of usage: a sea wave
example of usage: a tornado
example of usage: an aggregate of human beings.
example of usage: an energy wave
example of usage: an epidemic
example of usage: the undetached arm of a human being
definition: An independent continuant that is spatially extended whose identity is independent of that of other entities and can be maintained through time.
editor note: BFO 2 Reference: Material entities (continuants) can preserve their identity even while gaining and losing material parts. Continuants are contrasted with occurrents, which unfold themselves in successive temporal parts or phases [60
editor note: BFO 2 Reference: Object, Fiat Object Part and Object Aggregate are not intended to be exhaustive of Material Entity. Users are invited to propose new subcategories of Material Entity.
editor note: BFO 2 Reference: ‘Matter’ is intended to encompass both mass and energy (we will address the ontological treatment of portions of energy in a later version of BFO). A portion of matter is anything that includes elementary particles among its proper or improper parts: quarks and leptons, including electrons, as the smallest particles thus far discovered; baryons (including protons and neutrons) at a higher level of granularity; atoms and molecules at still higher levels, forming the cells, organs, organisms and other material entities studied by biologists, the portions of rock studied by geologists, the fossils studied by paleontologists, and so on.Material entities are three-dimensional entities (entities extended in three spatial dimensions), as contrasted with the processes in which they participate, which are four-dimensional entities (entities extended also along the dimension of time).According to the FMA, material entities may have immaterial entities as parts – including the entities identified below as sites; for example the interior (or ‘lumen’) of your small intestine is a part of your body. BFO 2.0 embodies a decision to follow the FMA here.
elucidation: A material entity is an independent continuant that has some portion of matter as proper or improper continuant part. (axiom label in BFO2 Reference: [019-002])
has associated axiom(nl): Every entity which has a material entity as continuant part is a material entity. (axiom label in BFO2 Reference: [020-002])
has associated axiom(nl): every entity of which a material entity is continuant part is also a material entity. (axiom label in BFO2 Reference: [021-002])
has associated axiom(fol): (forall (x) (if (MaterialEntity x) (IndependentContinuant x))) // axiom label in BFO2 CLIF: [019-002]
has associated axiom(fol): (forall (x) (if (and (Entity x) (exists (y t) (and (MaterialEntity y) (continuantPartOfAt x y t)))) (MaterialEntity x))) // axiom label in BFO2 CLIF: [021-002]
has associated axiom(fol): (forall (x) (if (and (Entity x) (exists (y t) (and (MaterialEntity y) (continuantPartOfAt y x t)))) (MaterialEntity x))) // axiom label in BFO2 CLIF: [020-002]

Axiom
annotated source: material entity
annotated property: elucidation
annotated target: A material entity is an independent continuant that has some portion of matter as proper or improper continuant part. (axiom label in BFO2 Reference: [019-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/019-002

Axiom
annotated source: material entity
annotated property: has associated axiom(nl)
annotated target: Every entity which has a material entity as continuant part is a material entity. (axiom label in BFO2 Reference: [020-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/020-002

Axiom
annotated source: material entity
annotated property: has associated axiom(nl)
annotated target: every entity of which a material entity is continuant part is also a material entity. (axiom label in BFO2 Reference: [021-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/021-002

Axiom
annotated source: material entity
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (MaterialEntity x) (IndependentContinuant x))) // axiom label in BFO2 CLIF: [019-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/019-002

Axiom
annotated source: material entity
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (and (Entity x) (exists (y t) (and (MaterialEntity y) (continuantPartOfAt x y t)))) (MaterialEntity x))) // axiom label in BFO2 CLIF: [021-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/021-002

Axiom
annotated source: material entity
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (and (Entity x) (exists (y t) (and (MaterialEntity y) (continuantPartOfAt y x t)))) (MaterialEntity x))) // axiom label in BFO2 CLIF: [020-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/020-002

immaterial entity
type: Class
subclass of: independent continuant
BFO OWL specification label: immaterial
BFO CLIF specification label: ImmaterialEntity
editor note: BFO 2 Reference: Immaterial entities are divided into two subgroups:boundaries and sites, which bound, or are demarcated in relation, to material entities, and which can thus change location, shape and size and as their material hosts move or change shape or size (for example: your nasal passage; the hold of a ship; the boundary of Wales (which moves with the rotation of the Earth) [38, 7, 10

process profile
type: Class
subclass of: process
disjoint with: history
BFO OWL specification label: process-profile
BFO CLIF specification label: ProcessProfile
example of usage: On a somewhat higher level of complexity are what we shall call rate process profiles, which are the targets of selective abstraction focused not on determinate quality magnitudes plotted over time, but rather on certain ratios between these magnitudes and elapsed times. A speed process profile, for example, is represented by a graph plotting against time the ratio of distance covered per unit of time. Since rates may change, and since such changes, too, may have rates of change, we have to deal here with a hierarchy of process profile universals at successive levels
example of usage: One important sub-family of rate process profiles is illustrated by the beat or frequency profiles of cyclical processes, illustrated by the 60 beats per minute beating process of John’s heart, or the 120 beats per minute drumming process involved in one of John’s performances in a rock band, and so on. Each such process includes what we shall call a beat process profile instance as part, a subtype of rate process profile in which the salient ratio is not distance covered but rather number of beat cycles per unit of time. Each beat process profile instance instantiates the determinable universal beat process profile. But it also instantiates multiple more specialized universals at lower levels of generality, selected from rate process profilebeat process profileregular beat process profile3 bpm beat process profile4 bpm beat process profileirregular beat process profileincreasing beat process profileand so on.In the case of a regular beat process profile, a rate can be assigned in the simplest possible fashion by dividing the number of cycles by the length of the temporal region occupied by the beating process profile as a whole. Irregular process profiles of this sort, for example as identified in the clinic, or in the readings on an aircraft instrument panel, are often of diagnostic significance.
example of usage: The simplest type of process profiles are what we shall call ‘quality process profiles’, which are the process profiles which serve as the foci of the sort of selective abstraction that is involved when measurements are made of changes in single qualities, as illustrated, for example, by process profiles of mass, temperature, aortic pressure, and so on.
definition: b is a process_profile =Def. there is some process c such that b process_profile_of c (axiom label in BFO2 Reference: [093-002])
elucidation: b process_profile_of c holds when b proper_occurrent_part_of c& there is some proper_occurrent_part d of c which has no parts in common with b & is mutually dependent on b& is such that b, c and d occupy the same temporal region (axiom label in BFO2 Reference: [094-005])
has associated axiom(fol): (forall (x y) (if (processProfileOf x y) (and (properContinuantPartOf x y) (exists (z t) (and (properOccurrentPartOf z y) (TemporalRegion t) (occupiesSpatioTemporalRegion x t) (occupiesSpatioTemporalRegion y t) (occupiesSpatioTemporalRegion z t) (not (exists (w) (and (occurrentPartOf w x) (occurrentPartOf w z))))))))) // axiom label in BFO2 CLIF: [094-005]
has associated axiom(fol): (iff (ProcessProfile a) (exists (b) (and (Process b) (processProfileOf a b)))) // axiom label in BFO2 CLIF: [093-002]

Axiom
annotated source: process profile
annotated property: definition
annotated target: b is a process_profile =Def. there is some process c such that b process_profile_of c (axiom label in BFO2 Reference: [093-002])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/093-002

Axiom
annotated source: process profile
annotated property: elucidation
annotated target: b process_profile_of c holds when b proper_occurrent_part_of c& there is some proper_occurrent_part d of c which has no parts in common with b & is mutually dependent on b& is such that b, c and d occupy the same temporal region (axiom label in BFO2 Reference: [094-005])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/094-005

Axiom
annotated source: process profile
annotated property: has associated axiom(fol)
annotated target: (forall (x y) (if (processProfileOf x y) (and (properContinuantPartOf x y) (exists (z t) (and (properOccurrentPartOf z y) (TemporalRegion t) (occupiesSpatioTemporalRegion x t) (occupiesSpatioTemporalRegion y t) (occupiesSpatioTemporalRegion z t) (not (exists (w) (and (occurrentPartOf w x) (occurrentPartOf w z))))))))) // axiom label in BFO2 CLIF: [094-005]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/094-005

Axiom
annotated source: process profile
annotated property: has associated axiom(fol)
annotated target: (iff (ProcessProfile a) (exists (b) (and (Process b) (processProfileOf a b)))) // axiom label in BFO2 CLIF: [093-002]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/093-002

relational quality
type: Class
subclass of: quality
BFO OWL specification label: r-quality
BFO CLIF specification label: RelationalQuality
example of usage: John’s role of husband to Mary is dependent on Mary’s role of wife to John, and both are dependent on the object aggregate comprising John and Mary as member parts joined together through the relational quality of being married.
example of usage: a marriage bond, an instance of requited love, an obligation between one person and another.
definition: b is a relational quality = Def. for some independent continuants c, d and for some time t: b quality_of c at t & b quality_of d at t. (axiom label in BFO2 Reference: [057-001])
has associated axiom(fol): (iff (RelationalQuality a) (exists (b c t) (and (IndependentContinuant b) (IndependentContinuant c) (qualityOfAt a b t) (qualityOfAt a c t)))) // axiom label in BFO2 CLIF: [057-001]

Axiom
annotated source: relational quality
annotated property: definition
annotated target: b is a relational quality = Def. for some independent continuants c, d and for some time t: b quality_of c at t & b quality_of d at t. (axiom label in BFO2 Reference: [057-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/057-001

Axiom
annotated source: relational quality
annotated property: has associated axiom(fol)
annotated target: (iff (RelationalQuality a) (exists (b c t) (and (IndependentContinuant b) (IndependentContinuant c) (qualityOfAt a b t) (qualityOfAt a c t)))) // axiom label in BFO2 CLIF: [057-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/057-001

zero-dimensional temporal region
type: Class
subclass of: temporal region
BFO OWL specification label: 0d-t-region
BFO CLIF specification label: ZeroDimensionalTemporalRegion
example of usage: a temporal region that is occupied by a process boundary
example of usage: right now
example of usage: the moment at which a child is born
example of usage: the moment at which a finger is detached in an industrial accident
example of usage: the moment of death.
alternative term: temporal instant.
elucidation: A zero-dimensional temporal region is a temporal region that is without extent. (axiom label in BFO2 Reference: [102-001])
has associated axiom(fol): (forall (x) (if (ZeroDimensionalTemporalRegion x) (TemporalRegion x))) // axiom label in BFO2 CLIF: [102-001]

Axiom
annotated source: zero-dimensional temporal region
annotated property: elucidation
annotated target: A zero-dimensional temporal region is a temporal region that is without extent. (axiom label in BFO2 Reference: [102-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/102-001

Axiom
annotated source: zero-dimensional temporal region
annotated property: has associated axiom(fol)
annotated target: (forall (x) (if (ZeroDimensionalTemporalRegion x) (TemporalRegion x))) // axiom label in BFO2 CLIF: [102-001]
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/102-001

history
type: Class
subclass of: process
BFO OWL specification label: history
BFO CLIF specification label: History
elucidation: A history is a process that is the sum of the totality of processes taking place in the spatiotemporal region occupied by a material entity or site, including processes on the surface of the entity or within the cavities to which it serves as host. (axiom label in BFO2 Reference: [138-001])

Axiom
annotated source: history
annotated property: elucidation
annotated target: A history is a process that is the sum of the totality of processes taking place in the spatiotemporal region occupied by a material entity or site, including processes on the surface of the entity or within the cavities to which it serves as host. (axiom label in BFO2 Reference: [138-001])
has axiom label: http://purl.obolibrary.org/obo/bfo/axiom/138-001

geographic location
type: Class
subclass of: site
type: NamedIndividual
definition: A reference to a place on the Earth, by its name or by its geographical location.
imported from: gaz.owl

measurement unit label
type: Class
subclass of: datum label
editor preferred term: measurement unit label
example of usage: Examples of measurement unit labels are liters, inches, weight per volume.
has curation status: pending final vetting
definition: A measurement unit label is as a label that is part of a scalar measurement datum and denotes a unit of measure.
editor note: 2009-03-16: provenance: a term measurement unit was proposed for OBI (OBI_0000176) , edited by Chris Stoeckert and Cristian Cocos, and subsequently moved to IAO where the objective for which the original term was defined was satisfied with the definition of this, different, term.
editor note: 2009-03-16: review of this term done during during the OBI workshop winter 2009 and the current definition was considered acceptable for use in OBI. If there is a need to modify this definition please notify OBI.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Melanie Courtot

datum label
type: Class
subclass of: information content entity
editor preferred term: datum label
has curation status: metadata incomplete
definition: A label is a symbol that is part of some other datum and is used to either partially define the denotation of that datum or to provide a means for identifying the datum as a member of the set of data with the same label
editor note: http://www.golovchenko.org/cgi-bin/wnsearch#4n
term editor: GROUP: IAO
curator note: 9/22/11 BP: changed the rdfs:label for this class from 'label' to 'datum label' to convey that this class is not intended to cover all kinds of labels (stickers, radiolabels, etc.), and not even all kind of textual labels, but rather the kind of labels occuring in a datum.

data item
type: Class
subclass of: information content entity
editor preferred term: data item
example of usage: Data items include counts of things, analyte concentrations, and statistical summaries.
has curation status: pending final vetting
definition: An information content entity that is intended to be a truthful statement about something (modulo, e.g., measurement precision or other systematic errors) and is constructed/acquired by a method which reliably tends to produce (approximately) truthful statements.
editor note: 2/2/2009 Alan and Bjoern discussing FACS run output data. This is a data item because it is about the cell population. Each element records an event and is typically further composed a set of measurment data items that record the fluorescent intensity stimulated by one of the lasers.
editor note: 2009-03-16: data item deliberatly ambiguous: we merged data set and datum to be one entity, not knowing how to define singular versus plural. So data item is more general than datum.
editor note: 2009-03-16: removed datum as alternative term as datum specifically refers to singular form, and is thus not an exact synonym.
editor note: 2014-03-31: See discussion at http://odontomachus.wordpress.com/2014/03/30/aboutness-objects-propositions/
editor note: JAR: datum -- well, this will be very tricky to define, but maybe some information-like stuff that might be put into a computer and that is meant, by someone, to denote and/or to be interpreted by some process... I would include lists, tables, sentences... I think I might defer to Barry, or to Brian Cantwell Smith JAR: A data item is an approximately justified approximately true approximate belief
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Chris Stoeckert
term editor: PERSON: Jonathan Rees
alternative term: data

symbol
type: Class
subclass of: information content entity
editor preferred term: symbol
example of usage: a serial number such as "12324X"
example of usage: a stop sign
example of usage: a written proper name such as "OBI"
has curation status: pending final vetting
definition: An information content entity that is a mark(s) or character(s) used as a conventional representation of another entity.
editor note: 20091104, MC: this needs work and will most probably change
editor note: 2014-03-31: We would like to have a deeper analysis of 'mark' and 'sign' in the future (see https://github.com/information-artifact-ontology/IAO/issues/154).
term editor: PERSON: James A. Overton
term editor: PERSON: Jonathan Rees
definition source: based on Oxford English Dictionary

information content entity
type: Class
subclass of: generically dependent continuant
subclass of: Restriction
  on property: is about
  some values from: entity
editor preferred term: information content entity
example of usage: Examples of information content entites include journal articles, data, graphical layouts, and graphs.
has curation status: ready for release
definition: A generically dependent continuant that is about some thing.
editor note: 2014-03-10: The use of "thing" is intended to be general enough to include universals and configurations (see https://groups.google.com/d/msg/information-ontology/GBxvYZCk1oc/-L6B5fSBBTQJ).
editor note: information_content_entity 'is_encoded_in' some digital_entity in obi before split (040907). information_content_entity 'is_encoded_in' some physical_document in obi before split (040907). Previous. An information content entity is a non-realizable information entity that 'is encoded in' some digital or physical entity.
term editor: PERSON: Chris Stoeckert
definition source: OBI_0000142

scalar measurement datum
type: Class
subclass of: measurement datum
subclass of: Restriction
  on property: has measurement unit label
  min cardinality: 1
subclass of: Restriction
  on property: has measurement value
  min cardinality: 1
example of usage: 10 feet. 3 ml.
has curation status: metadata complete
definition: A scalar measurement datum is a measurement datum that is composed of two parts, numerals and a unit label.
editor note: 2009-03-16: we decided to keep datum singular in scalar measurement datum, as in this case we explicitly refer to the singular form
editor note: Would write this as: has_part some 'measurement unit label' and has_part some numeral and has_part exactly 2, except for the fact that this won't let us take advantage of OWL reasoning over the numbers. Instead use has measurment value property to represent the same. Use has measurement unit label (subproperty of has_part) so we can easily say that there is only one of them.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Melanie Courtot

data set
type: Class
subclass of: data item
editor preferred term: data set
example of usage: Intensity values in a CEL file or from multiple CEL files comprise a data set (as opposed to the CEL files themselves).
has curation status: pending final vetting
definition: A data item that is an aggregate of other data items of the same type that have something in common. Averages and distributions can be determined for data sets.
editor note: 2009/10/23 Alan Ruttenberg. The intention is that this term represent collections of like data. So this isn't for, e.g. the whole contents of a cel file, which includes parameters, metadata etc. This is more like java arrays of a certain rather specific type
editor note: 2014-05-05: Data sets are aggregates and thus must include two or more data items. We have chosen not to add logical axioms to make this restriction.
term editor: person:Allyson Lister
term editor: person:Chris Stoeckert
definition source: OBI_0000042
definition source: group:OBI

image
type: Class
subclass of: figure
editor preferred term: image
has curation status: ready for release
definition: An image is an affine projection to a two dimensional surface, of measurements of some quality of an entity or entities repeated at regular intervals across a spatial range, where the measurements are represented as color and luminosity on the projected on surface.
term editor: person:Alan Ruttenberg
term editor: person:Allyson
term editor: person:Chris Stoeckert
definition source: OBI_0000030
definition source: group:OBI

measurement datum
type: Class
subclass of: data item
editor preferred term: measurement datum
example of usage: Examples of measurement data are the recoding of the weight of a mouse as {40,mass,"grams"}, the recording of an observation of the behavior of the mouse {,process,"agitated"}, the recording of the expression level of a gene as measured through the process of microarray experiment {3.4,luminosity,}.
has curation status: pending final vetting
definition: A measurement datum is an information content entity that is a recording of the output of a measurement such as produced by a device.
editor note: 2/2/2009 is_specified_output of some assay?
term editor: person:Chris Stoeckert
definition source: OBI_0000305
definition source: group:OBI

figure
type: Class
subclass of: information content entity
editor preferred term: figure
example of usage: Any picture, diagram or table
has curation status: metadata complete
definition: An information content entity consisting of a two dimensional arrangement of information content entities such that the arrangement itself is about something.
term editor: PERSON: Lawrence Hunter

time measurement datum
type: Class
subclass of: scalar measurement datum
subclass of: Class
  intersection of: Restriction
    on property: has measurement unit label
    all values from: time unit
  intersection of: Restriction
    on property: is duration of
    all values from: process
has curation status: metadata incomplete
definition: A scalar measurement datum that is the result of measuring a temporal interval
editor note: 2009/09/28 Alan Ruttenberg. Fucoidan-use-case
term editor: Person:Alan Ruttenberg

email address
type: Class
subclass of: information content entity
editor preferred term: email address
has curation status: metadata incomplete
editor note: Alan Ruttenberg 1/3/2012 - Provisional id, see issue at https://github.com/information-artifact-ontology/IAO/issues/130&thanks=130&ts=1325636583
term editor: Person:Alan Ruttenberg
term editor: Person:Chris Stoeckart

centrally registered identifier symbol
type: Class
subclass of: symbol
subclass of: Restriction
  on property: part of
  some values from: centrally registered identifier
example of usage: The sentence "The article has Pubmed ID 12345." contains a CRID that has two parts: one part is the CRID symbol, which is '12345'; the other part denotes the CRID registry, which is Pubmed.
has curation status: metadata complete
definition: A symbol that is part of a CRID and that is sufficient to look up a record from the CRID's registry.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Bill Hogan
term editor: PERSON: Bjoern Peters
term editor: PERSON: Melanie Courtot
alternative term: CRID symbol
definition source: Original proposal from Bjoern, discussions at IAO calls

centrally registered identifier
type: Class
subclass of: information content entity
subclass of: Restriction
  on property: has part
  some values from: centrally registered identifier symbol
subclass of: Restriction
  on property: has part
  some values from: Restriction
    on property: denotes
    some values from: centrally registered identifier registry
example of usage: The sentence "The article has Pubmed ID 12345." contains a CRID that has two parts: one part is the CRID symbol, which is '12345'; the other part denotes the CRID registry, which is Pubmed.
has curation status: metadata complete
definition: An information content entity that consists of a CRID symbol and additional information about the CRID registry to which it belongs.
editor note: 2014-05-05: In defining this term we take no position on what the CRID denotes. In particular do not assume it denotes a *record* in the CRID registry (since the registry might not have 'records').
editor note: Alan, IAO call 20101124: potentially the CRID denotes the instance it was associated with during creation.
editor note: Note, IAO call 20101124: URIs are not always CRID, as not centrally registered. We acknowledge that CRID is a subset of a larger identifier class, but this subset fulfills our current needs. OBI PURLs are CRID as they are registered with OCLC. UPCs (Universal Product Codes from AC Nielsen)are not CRID as they are not centrally registered.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Bill Hogan
term editor: PERSON: Bjoern Peters
term editor: PERSON: Melanie Courtot
alternative term: CRID
definition source: Original proposal from Bjoern, discussions at IAO calls

centrally registered identifier registry
type: Class
subclass of: data set
example of usage: PubMed is a CRID registry. It has a dataset of PubMed identifiers associated with journal articles.
has curation status: metadata complete
definition: A CRID registry is a dataset of CRID records, each consisting of a CRID symbol and additional information which was recorded in the dataset through a assigning a centrally registered identifier process.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Bill Hogan
term editor: PERSON: Bjoern Peters
term editor: PERSON: Melanie Courtot
alternative term: CRID registry
definition source: Original proposal from Bjoern, discussions at IAO calls

time stamped measurement datum
type: Class
subclass of: measurement datum
subclass of: Class
  intersection of: Restriction
    on property: has time stamp
    some values from: time measurement datum
  intersection of: Restriction
    on property: has measurement datum
    some values from: measurement datum
has curation status: metadata incomplete

identifier
type: Class
subclass of: information content entity
editor preferred term: identifier
definition: An identifier is an information content entity that is the outcome of a dubbing process and is used to refer to one instance of entity shared by a group of people to refer to that individual entity.
imported from: pno.owl

planned process
type: Class
subclass of: process
editor preferred term: planned process
definition: A process that realizes a plan which is the concretization of a plan specification.
imported from: obi.owl

time unit
type: Class
subclass of: measurement unit label
editor preferred term: time unit
definition: A unit which is a standard measure of the dimension in which events occur in sequence.
imported from: uo.owl

example to be eventually removed
type: NamedIndividual
editor preferred term: example to be eventually removed

failed exploratory term
type: Thing
type: NamedIndividual
editor preferred term: failed exploratory term
definition: The term was used in an attempt to structure part of the ontology but in retrospect failed to do a good job
term editor: Person:Alan Ruttenberg

metadata complete
type: NamedIndividual
editor preferred term: metadata complete
definition: Class has all its metadata, but is either not guaranteed to be in its final location in the asserted IS_A hierarchy or refers to another class that is not complete.

organizational term
type: NamedIndividual
editor preferred term: organizational term
definition: Term created to ease viewing/sort terms for development purpose, and will not be included in a release

ready for release
type: NamedIndividual
editor preferred term: ready for release
definition: Class has undergone final review, is ready for use, and will be included in the next release. Any class lacking "ready_for_release" should be considered likely to change place in hierarchy, have its definition refined, or be obsoleted in the next release. Those classes deemed "ready_for_release" will also derived from a chain of ancestor classes that are also "ready_for_release."

metadata incomplete
type: NamedIndividual
editor preferred term: metadata incomplete
definition: Class is being worked on; however, the metadata (including definition) are not complete or sufficiently clear to the branch editors.

uncurated
type: NamedIndividual
editor preferred term: uncurated
definition: Nothing done yet beyond assigning a unique class ID and proposing a preferred term.

pending final vetting
type: NamedIndividual
editor preferred term: pending final vetting
definition: All definitions, placement in the asserted IS_A hierarchy and required minimal metadata are complete. The class is awaiting a final review by someone other than the term editor.

obsolete_core
type: NamedIndividual
definition: Core is an instance of a grouping of terms from an ontology or ontologies. It is used by the ontology to identify main classes.
term editor: PERSON: Alan Ruttenberg
term editor: PERSON: Melanie Courtot
has obsolescence reason: placeholder removed
deprecated: true

placeholder removed
type: Thing
type: NamedIndividual
editor preferred term: placeholder removed

terms merged
type: NamedIndividual
editor preferred term: terms merged
editor note: An editor note should explain what were the merged terms and the reason for the merge.

term imported
type: NamedIndividual
editor preferred term: term imported
editor note: This is to be used when the original term has been replaced by a term imported from an other ontology. An editor note should indicate what is the URI of the new term to use.

term split
type: NamedIndividual
editor preferred term: term split
editor note: This is to be used when a term has been split in two or more new terms. An editor note should indicate the reason for the split and indicate the URIs of the new terms created.

obsolete_other
type: NamedIndividual
editor note: This is to be used if none of the existing instances cover the reason for obsolescence. An editor note should indicate this new reason.
editor note: We expect to be able to mine these new reasons and add instances as required.
deprecated: true

universal
type: NamedIndividual
editor preferred term: universal
editor note: Hard to give a definition for. Intuitively a "natural kind" rather than a collection of any old things, which a class is able to be, formally. At the meta level, universals are defined as positives, are disjoint with their siblings, have single asserted parents.
term editor: Alan Ruttenberg
definition source: A Formal Theory of Substances, Qualities, and Universals, http://ontology.buffalo.edu/bfo/SQU.pdf

defined class
type: NamedIndividual
editor preferred term: defined class
definition: A defined class is a class that is defined by a set of logically necessary and sufficient conditions but is not a universal
editor note: "definitions", in some readings, always are given by necessary and sufficient conditions. So one must be careful (and this is difficult sometimes) to distinguish between defined classes and universal.
term editor: Alan Ruttenberg

named class expression
type: NamedIndividual
editor preferred term: named class expression
definition: A named class expression is a logical expression that is given a name. The name can be used in place of the expression.
editor note: named class expressions are used in order to have more concise logical definition but their extensions may not be interesting classes on their own. In languages such as OWL, with no provisions for macros, these show up as actuall classes. Tools may with to not show them as such, and to replace uses of the macros with their expansions
term editor: Alan Ruttenberg

to be replaced with external ontology term
type: NamedIndividual
editor preferred term: to be replaced with external ontology term
definition: Terms with this status should eventually replaced with a term from another ontology.
term editor: Alan Ruttenberg
definition source: group:OBI

requires discussion
type: NamedIndividual
editor preferred term: requires discussion
definition: A term that is metadata complete, has been reviewed, and problems have been identified that require discussion before release. Such a term requires editor note(s) to identify the outstanding issues.
term editor: Alan Ruttenberg
definition source: group:OBI