https://w3id.org/framester/conceptnet5/data/en/logical_constant <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/logical_connective> <https://w3id.org/framester/conceptnet5/data/en/syncategorematic> risorse dalla linked data cloud