https://w3id.org/framester/conceptnet5/data/en/tetrose <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/tetra> <https://w3id.org/framester/conceptnet5/data/en/ose> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/monosaccharide.n> risorse dalla linked data cloud