https://w3id.org/framester/conceptnet5/data/en/cathode_ray.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/ray> <https://w3id.org/framester/conceptnet5/data/en/electron> <https://w3id.org/framester/conceptnet5/data/en/anode> <https://w3id.org/framester/conceptnet5/data/en/electric_field> <https://w3id.org/framester/conceptnet5/data/en/cathode> <https://w3id.org/framester/conceptnet5/data/en/vacuum_tube> risorse dalla linked data cloud