https://w3id.org/framester/conceptnet5/data/en/sign.v <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/signature> <https://w3id.org/framester/conceptnet5/data/en/signal> <https://w3id.org/framester/conceptnet5/data/en/signify> <https://w3id.org/framester/conceptnet5/data/en/signet> risorse dalla linked data cloud