@prefix ns1: <http://w3id.org/opino/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

ns1:hasSubject a owl:FunctionalProperty,
        owl:ObjectProperty ;
    rdfs:label "has subject"@en ;
    rdfs:comment "A relation from a Predication to the entity that fills its subject slot. It is functional and it specialises dul:isSettingFor, because the subject is an entity in the setting of the situation. It is aligned with rdf:subject by skos:closeMatch and not by equivalence: rdf: terms cannot be declared as properties in OWL 2 DL, and an equivalence would make Predication a subclass of rdf:Statement through the domain."@en ;
    rdfs:domain ns1:Predication ;
    rdfs:isDefinedBy "http://w3id.org/opino/"^^xsd:anyURI ;
    rdfs:range owl:Thing ;
    rdfs:subPropertyOf <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#isSettingFor> ;
    owl:inverseOf ns1:isSubjectOf ;
    skos:closeMatch rdf:subject .