buy https://w3id.org/framester/pb/pbdata/buy.01 <https://w3id.org/framester/pb/pbschema/RoleSet> rdfs:label xsd:string buy rdf:type <https://w3id.org/framester/pb/pbschema/RoleSet> <https://w3id.org/framester/pb/pbschema/hasRole> <https://w3id.org/framester/pb/pbdata/buy.01__0> <https://w3id.org/framester/pb/pbdata/buy.01__1> <https://w3id.org/framester/pb/pbdata/buy.01__2> <https://w3id.org/framester/pb/pbdata/buy.01__3> <https://w3id.org/framester/pb/pbdata/buy.01__4> risorse dalla linked data cloud