https://w3id.org/framester/conceptnet5/cla/la.attestor.v <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/attest> <https://w3id.org/framester/conceptnet5/data/en/confirm> <https://w3id.org/framester/conceptnet5/data/en/prove> <https://w3id.org/framester/conceptnet5/data/en/bear_witness> <https://w3id.org/framester/conceptnet5/data/en/corroborate> risorse dalla linked data cloud