https://w3id.org/framester/conceptnet5/data/en/alpha_emitter <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/alpha.n> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/radioactive_substance> <https://w3id.org/framester/conceptnet5/data/en/isotope> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/alpha_emission> risorse dalla linked data cloud