https://w3id.org/framester/conceptnet5/data/en/arcsecond <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/second> <https://w3id.org/framester/conceptnet5/data/en/arc> risorse dalla linked data cloud