https://w3id.org/framester/conceptnet5/data/en/migratory_bird <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/fowl> <https://w3id.org/framester/conceptnet5/data/en/migratory_animal> risorse dalla linked data cloud