https://w3id.org/framester/conceptnet5/cla/la.metallum.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/mine> <https://w3id.org/framester/conceptnet5/data/en/silver> <https://w3id.org/framester/conceptnet5/data/en/metal> <https://w3id.org/framester/conceptnet5/data/en/gold> <https://w3id.org/framester/conceptnet5/data/en/precious_metal> risorse dalla linked data cloud