https://w3id.org/framester/conceptnet5/data/en/small_island <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/top_of_coral_reef> <https://w3id.org/framester/conceptnet5/schema/NotHasProperty> <https://w3id.org/framester/conceptnet5/data/en/safe_if_there_be_storm> risorse dalla linked data cloud