https://w3id.org/framester/conceptnet5/data/en/rotary_wing_aircraft <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/hexalateral_object> <https://w3id.org/framester/conceptnet5/data/en/air_transportation_vehicle> risorse dalla linked data cloud