https://w3id.org/framester/conceptnet5/data/en/fuel_power_device <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/mechanical_device> <https://w3id.org/framester/conceptnet5/data/en/power_device> risorse dalla linked data cloud