https://w3id.org/framester/conceptnet5/data/en/butadiene <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/ene> <https://w3id.org/framester/conceptnet5/data/en/diene> <https://w3id.org/framester/conceptnet5/schema/Synonym> <https://w3id.org/framester/conceptnet5/data/en/1_3_butadiene> risorse dalla linked data cloud