https://w3id.org/framester/conceptnet5/data/en/barrage_balloon <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/balloon.n> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/tether_aerostat> risorse dalla linked data cloud