https://w3id.org/framester/conceptnet5/data/en/xanth <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/magical_fantasy_world> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/xantho> risorse dalla linked data cloud