https://w3id.org/framester/conceptnet5/data/en/network_of_pipe <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/network> <https://w3id.org/framester/conceptnet5/data/en/connect_physical_path_system> <https://w3id.org/framester/conceptnet5/data/en/customary_system_of_link> risorse dalla linked data cloud