https://w3id.org/framester/conceptnet5/data/en/normed_vector_space.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/norm> <https://w3id.org/framester/conceptnet5/data/en/vector_space> risorse dalla linked data cloud