https://w3id.org/framester/conceptnet5/data/en/obligation <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/cla/la.obligatio.n> <https://w3id.org/framester/conceptnet5/data/en/obligate.v> <https://w3id.org/framester/conceptnet5/schema/Synonym> <https://w3id.org/framester/conceptnet5/data/en/mandate> <https://w3id.org/framester/conceptnet5/schema/CreatedBy> <https://w3id.org/framester/conceptnet5/data/en/enter_into_contract> risorse dalla linked data cloud