https://w3id.org/framester/conceptnet5/data/en/sharpener <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/sharpen.v> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/sharpen> risorse dalla linked data cloud