https://w3id.org/framester/conceptnet5/data/en/abelian_group <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/group.n> <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/group> <https://w3id.org/framester/conceptnet5/data/en/group_that_be_commutative> risorse dalla linked data cloud