https://w3id.org/framester/conceptnet5/data/en/organic_chemistry <https://w3id.org/framester/conceptnet5/schema/DefinedAs> <https://w3id.org/framester/conceptnet5/data/en/chemistry_of_element_carbon> <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/chemistry.n> <https://w3id.org/framester/conceptnet5/data/en/organic.a> <https://w3id.org/framester/conceptnet5/schema/HasPrerequisite> <https://w3id.org/framester/conceptnet5/data/en/clean_glassware> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/topic_category> <https://w3id.org/framester/conceptnet5/data/en/scientific_discipline> risorse dalla linked data cloud