https://w3id.org/framester/conceptnet5/data/en/helpfulness <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/ness> <https://w3id.org/framester/conceptnet5/data/en/helpful> risorse dalla linked data cloud