@prefix datacite: <http://purl.org/spar/datacite/> .
@prefix literal: <http://www.essepuntato.it/2010/06/literalreification/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

datacite:Identifier a owl:Class ;
    rdfs:label "identifier"@en ;
    rdfs:comment "An identifier that uniquely identities an entity, such as a funding agency, a person or a resource."@en ;
    rdfs:isDefinedBy datacite: ;
    rdfs:subClassOf [ a owl:Restriction ;
            owl:onClass datacite:IdentifierScheme ;
            owl:onProperty datacite:usesIdentifierScheme ;
            owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger ],
        [ a owl:Restriction ;
            owl:cardinality "1"^^xsd:nonNegativeInteger ;
            owl:onProperty [ owl:inverseOf datacite:hasIdentifier ] ],
        literal:Literal .