https://w3id.org/framester/conceptnet5/data/en/stereo_component <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/non_agentive_artifact> <https://w3id.org/framester/conceptnet5/data/en/electronic_device> risorse dalla linked data cloud