https://w3id.org/framester/conceptnet5/data/en/fall_sickness <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/fall.a> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/band> risorse dalla linked data cloud