https://w3id.org/framester/conceptnet5/data/en/pythagorean <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/pythagoras.n> <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/pythagoric> risorse dalla linked data cloud