@base <http://i2s.uib.no/kg4news/> .
@prefix : <http://i2s.uib.no/kg4news/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix bibo: <http://purl.org/ontology/bibo/> .

bibo:Article rdf:type owl:Class .
:Paper rdf:type owl:Class ;
    rdfs:subClassOf bibo:Article .

foaf:Person rdf:type owl:Class .
:Author rdf:type owl:Class ;
    rdfs:subClassOf foaf:Person .

skos:Concept rdf:type owl:Class .

dct:subject rdf:type owl:ObjectProperty ;
    rdfs:domain bibo:Article ;
    rdfs:range skos:Concept .

dct:references rdf:type owl:ObjectProperty ;
    rdfs:domain bibo:Article ;
    rdfs:range bibo:Article .

bibo:doi rdf:type owl:DatatypeProperty ;
    rdfs:domain bibo:Article ;
    rdfs:range rdfs:Literal .

dct:contributor rdf:type owl:ObjectProperty ;
    rdfs:domain bibo:Article ;
    rdfs:range :Author .

dct:title rdf:type owl:DatatypeProperty ;
    rdfs:domain bibo:Article;
    rdfs:range rdfs:Literal .

foaf:name rdf:type owl:DatatypeProperty ;
    rdfs:domain foaf:Person ;
    rdfs:range rdfs:Literal .

skos:prefLabel rdf:type owl:DatatypeProperty ;
    rdfs:domain skos:Concept ;
    rdfs:range rdfs:Literal .

skos:related rdf:type owl:ObjectProperty ;
    rdfs:domain skos:Concept ;
    rdfs:range skos:Concept .