https://w3id.org/framester/conceptnet5/data/en/optimistic <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/istic> <https://w3id.org/framester/conceptnet5/data/en/optimist.n> <https://w3id.org/framester/conceptnet5/cla/la.optimus.a> <https://w3id.org/framester/conceptnet5/schema/Synonym> <https://w3id.org/framester/conceptnet5/data/en/optimistic_thing> risorse dalla linked data cloud