https://w3id.org/framester/conceptnet5/data/en/rhomboid <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/parallelogram> <https://w3id.org/framester/conceptnet5/data/en/parallelogram.n.geometry> risorse dalla linked data cloud