https://w3id.org/framester/conceptnet5/data/en/mailbag <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/mail.n> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/mail> <https://w3id.org/framester/conceptnet5/data/en/bag> risorse dalla linked data cloud