https://w3id.org/framester/conceptnet5/data/en/leave_of_absence <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/leave.n> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/schedule_action> risorse dalla linked data cloud