https://w3id.org/framester/conceptnet5/cla/la.mediator.n <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/mediator> <https://w3id.org/framester/conceptnet5/data/en/intermediary> <https://w3id.org/framester/conceptnet5/data/en/go_between> risorse dalla linked data cloud