https://w3id.org/framester/conceptnet5/data/en/oar_propel_watercraft <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/user_guide_device> <https://w3id.org/framester/conceptnet5/data/en/surface_watercraft> risorse dalla linked data cloud