https://w3id.org/framester/conceptnet5/data/en/skid_mark <https://w3id.org/framester/conceptnet5/schema/AtLocation> <https://w3id.org/framester/conceptnet5/data/en/freeway> <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/skid.n> risorse dalla linked data cloud