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