https://w3id.org/framester/conceptnet5/data/en/cat_purr <https://w3id.org/framester/conceptnet5/schema/HasSubevent> <https://w3id.org/framester/conceptnet5/data/en/it_sound_nice> <https://w3id.org/framester/conceptnet5/data/en/it_be_happy> risorse dalla linked data cloud