https://w3id.org/framester/conceptnet5/data/en/electric_piano <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/piano.n> <https://w3id.org/framester/conceptnet5/schema/Synonym> <https://w3id.org/framester/conceptnet5/data/en/electronic_keyboard> risorse dalla linked data cloud