https://w3id.org/framester/conceptnet5/data/en/off_gas.v <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/noxious> <https://w3id.org/framester/conceptnet5/schema/Synonym> <https://w3id.org/framester/conceptnet5/data/en/outgas> risorse dalla linked data cloud