https://w3id.org/framester/wn/wn30/instances/word-middle-class <https://w3id.org/framester/wn/wn30/schema/Collocation> <https://w3id.org/framester/wn/wn30/schema/lexicalForm> middle-class rdf:type <https://w3id.org/framester/wn/wn30/schema/Collocation> risorse dalla linked data cloud