sign https://w3id.org/framester/pb/pbdata/sign.02 <https://w3id.org/framester/pb/pbschema/RoleSet> rdfs:label xsd:string sign rdf:type <https://w3id.org/framester/pb/pbschema/RoleSet> <https://w3id.org/framester/pb/pbschema/hasRole> <https://w3id.org/framester/pb/pbdata/sign.02__0> <https://w3id.org/framester/pb/pbdata/sign.02__1> <https://w3id.org/framester/pb/pbdata/sign.02__3> risorse dalla linked data cloud