https://w3id.org/framester/conceptnet5/data/en/instant_messenger <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/messenger.n> <https://w3id.org/framester/conceptnet5/schema/UsedFor> <https://w3id.org/framester/conceptnet5/data/en/talk_to_friend> risorse dalla linked data cloud