@prefix rdfs: . @prefix ns1: . @prefix virtrdf: . ns1:activity_title rdfs:subPropertyOf virtrdf:label . @prefix dc: . ns1:activity_title rdfs:subPropertyOf dc:title . @prefix owl: . @prefix dbpedia-owl: . ns1:activity_title owl:equivalentClass dbpedia-owl:Publisher . @prefix bibo: . ns1:activity_title owl:equivalentProperty bibo:title , dc:publisher . @prefix dcterms: . ns1:activity_title owl:equivalentProperty dcterms:publisher , dcterms:title , dc:title .