https://w3id.org/framester/conceptnet5/data/en/metropolitan_area_network <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/area.n> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/wide_area_network.n> risorse dalla linked data cloud