Microvocabulary capturing relations between streamed graphs and time instants. We reuse, i.e. specialize, from PROV ontology.
The time instant at which the validity of a graph ends.
The time instant at which a graph was generated (do we also need observedAt cf. https://github.com/streamreasoning/RSP-QL/issues/11#issuecomment-112418620?) .
The time instant at which a graph was received by an engine.
The time instant at which the validity of a graph starts.
The time instant at which a graph was transmitted to an engine.