https://w3id.org/framester/conceptnet5/data/en/geological_basin <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/slope> <https://w3id.org/framester/conceptnet5/data/en/basin> <https://w3id.org/framester/conceptnet5/data/en/depression> <https://w3id.org/framester/conceptnet5/data/en/natural_thing> risorse dalla linked data cloud