https://w3id.org/framester/conceptnet5/data/en/african_savannah <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/home_to_many_wild_animal> <https://w3id.org/framester/conceptnet5/data/en/rich_ecosystem> risorse dalla linked data cloud