https://w3id.org/framester/conceptnet5/data/en/nitrile.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/compound> <https://w3id.org/framester/conceptnet5/data/en/organic> <https://w3id.org/framester/conceptnet5/data/en/class> <https://w3id.org/framester/conceptnet5/data/en/cyano> <https://w3id.org/framester/conceptnet5/data/en/functional_group> risorse dalla linked data cloud