https://w3id.org/framester/conceptnet5/cla/la.plumula.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/feather> <https://w3id.org/framester/conceptnet5/data/en/down> <https://w3id.org/framester/conceptnet5/data/en/pluma> risorse dalla linked data cloud