https://w3id.org/framester/conceptnet5/data/en/monopsonist <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/ist> <https://w3id.org/framester/conceptnet5/data/en/monopsony> risorse dalla linked data cloud