https://w3id.org/framester/conceptnet5/data/en/naphtha <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/cla/la.naphtha.n> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/cla/la.naphtha> risorse dalla linked data cloud