https://w3id.org/framester/conceptnet5/data/en/difficulty <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/cla/la.difficultas.n> <https://w3id.org/framester/conceptnet5/cla/is.leikur.n> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/cla/la.dis> <https://w3id.org/framester/conceptnet5/cla/enm.difficultee> <https://w3id.org/framester/conceptnet5/cla/la.difficultas> <https://w3id.org/framester/conceptnet5/cla/la.difficul> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/evaluative_quantity> risorse dalla linked data cloud