@prefix rdf: . @prefix schema: . @prefix rdfs: . schema:Offer rdf:type rdfs:Class . @prefix owl: . schema:Offer rdf:type owl:Class . @prefix gr: . schema:Offer rdfs:subClassOf gr:Offering . @prefix pwdr: . schema:Offer pwdr:describedby . @prefix ns6: . schema:Offer pwdr:describedby ns6:mercari , . @prefix ns7: . schema:Offer pwdr:describedby ns7:v1 , .