@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix ns1: <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@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#> .

foaf:isPrimaryTopicOf a rdf:Property,
        owl:InverseFunctionalProperty ;
    rdfs:label "is primary topic of"^^rdf:string ;
    rdfs:comment "A document that this thing is the primary topic of."^^rdf:string ;
    rdfs:domain owl:Thing ;
    rdfs:isDefinedBy foaf: ;
    rdfs:range foaf:Document ;
    rdfs:subPropertyOf foaf:page ;
    owl:inverseOf foaf:primaryTopic ;
    ns1:term_status "stable"^^rdf:string .