https://w3id.org/framester/conceptnet5/data/en/knocker <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/knock> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/knock> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/mechanical_device> <https://w3id.org/framester/conceptnet5/data/en/door_signal_device> risorse dalla linked data cloud