https://w3id.org/framester/conceptnet5/data/en/formaldehyde <https://w3id.org/framester/conceptnet5/schema/DefinedAs> <https://w3id.org/framester/conceptnet5/data/en/simple_aldehyde> <https://w3id.org/framester/conceptnet5/schema/HasA> <https://w3id.org/framester/conceptnet5/data/en/cause_cancer_in_laboratory_animal> <https://w3id.org/framester/conceptnet5/schema/InstanceOf> <https://w3id.org/framester/conceptnet5/data/en/chemical_compound> <https://w3id.org/framester/conceptnet5/data/en/chemical_substance> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/chemical_compound> <https://w3id.org/framester/conceptnet5/data/en/tangible_thing> <https://w3id.org/framester/conceptnet5/data/en/natural_substance> risorse dalla linked data cloud