PREFIX schema:    <http://schema.org/>
PREFIX rdfs:      <http://www.w3.org/2000/01/rdf-schema#>
PREFIX pc:        <http://purl.org/procurement/public-contracts#>
PREFIX gr:        <http://purl.org/goodrelations/v1#>
PREFIX owl:       <http://www.w3.org/2002/07/owl#>
PREFIX adms:      <http://www.w3.org/ns/adms#>
PREFIX c4n:       <http://vocab.deri.ie/c4n#>
PREFIX dcterms:   <http://purl.org/dc/terms/>
PREFIX foaf:      <http://xmlns.com/foaf/0.1/>
PREFIX loted:     <http://www.loted.eu/ontology#>
PREFIX payment:   <http://reference.data.gov.uk/def/payment#>
PREFIX qb:        <http://purl.org/linked-data/cube#>
PREFIX rdf:       <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX skos:      <http://www.w3.org/2004/02/skos/core#>
PREFIX vann:      <http://purl.org/vocab/vann/>
PREFIX xsd:       <http://www.w3.org/2001/XMLSchema#>
PREFIX conference: <http://conference#>
PREFIX cmt:       <http://cmt#>
PREFIX sigkdd:    <http://sigkdd#>
PREFIX crm:       <http://erlangen-crm.org/current/>
PREFIX id:        <http://collection.britishmuseum.org/id/>
PREFIX idThes:    <http://collection.britishmuseum.org/id/thesauri/>
PREFIX prov:      <http://www.w3.org/ns/prov#>
PREFIX bmo:       <http://collection.britishmuseum.org/id/ontology/>
PREFIX jarql:     <http://jarql.com/>

CONSTRUCT {
    ?Contract0 dcterms:identifier ?cig.
    ?Contract0 rdf:type pc:Contract.
    ?Contract0 rdfs:description ?oggetto.
    ?Contract0 rdf:type pc:Contract.
    ?BusinessEntity0 dcterms:identifier ?strutturaProponente__codiceFiscaleProp.
    ?BusinessEntity0 rdf:type gr:BusinessEntity.
    ?BusinessEntity1 dcterms:identifier ?partecipanti__identificativo.
    ?BusinessEntity1 rdf:type gr:BusinessEntity.
    ?BusinessEntity1 rdfs:label ?partecipanti__ragioneSociale.
    ?BusinessEntity1 rdf:type gr:BusinessEntity.
    ?BusinessEntity1 dcterms:identifier ?aggiudicatari__identificativo.
    ?BusinessEntity1 rdf:type gr:BusinessEntity.
    ?BusinessEntity1 rdfs:label ?aggiudicatari__ragioneSociale.
    ?BusinessEntity1 rdf:type gr:BusinessEntity.
    ?Contract0 pc:contractingAuthority ?BusinessEntity0.
    ?Contract0 pc:contractingAuthority ?BusinessEntity1.
}
WHERE {
    ?root a jarql:Root.
    OPTIONAL { ?root jarql:cig ?cig. }
    OPTIONAL { ?root jarql:oggetto ?oggetto. }
    OPTIONAL { ?root jarql:strutturaProponente ?strutturaProponente. }
    OPTIONAL { ?strutturaProponente jarql:codiceFiscaleProp ?strutturaProponente__codiceFiscaleProp. }
    OPTIONAL { ?root jarql:partecipanti ?partecipanti. }
    OPTIONAL { ?partecipanti jarql:identificativo ?partecipanti__identificativo. }
    OPTIONAL { ?root jarql:partecipanti ?partecipanti. }
    OPTIONAL { ?partecipanti jarql:ragioneSociale ?partecipanti__ragioneSociale. }
    OPTIONAL { ?root jarql:aggiudicatari ?aggiudicatari. }
    OPTIONAL { ?aggiudicatari jarql:identificativo ?aggiudicatari__identificativo. }
    OPTIONAL { ?root jarql:aggiudicatari ?aggiudicatari. }
    OPTIONAL { ?aggiudicatari jarql:ragioneSociale ?aggiudicatari__ragioneSociale. }
    BIND (URI(CONCAT('http://purl.org/procurement/public-contracts/contract/',?cig)) as ?Contract0)
    BIND (URI(CONCAT('http://purl.org/goodrelations/v1/businessentity/',?strutturaProponente__codiceFiscaleProp)) as ?BusinessEntity0)
    BIND (URI(CONCAT('http://purl.org/goodrelations/v1/businessentity/',?partecipanti__identificativo)) as ?BusinessEntity1)
}