https://w3id.org/framester/conceptnet5/data/en/tough_luck <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/tough.a> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/bad_luck> risorse dalla linked data cloud