https://w3id.org/framester/conceptnet5/data/en/duff <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/dough> <https://w3id.org/framester/conceptnet5/data/en/duffer> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/up_duff> risorse dalla linked data cloud