https://w3id.org/framester/conceptnet5/data/en/problematical <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/problem.n> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/al> <https://w3id.org/framester/conceptnet5/data/en/problematic> risorse dalla linked data cloud