https://w3id.org/framester/conceptnet5/data/en/complex_number.n <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/quaternion> <https://w3id.org/framester/conceptnet5/data/en/hypercomplex_number> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/number> <https://w3id.org/framester/conceptnet5/data/en/real_number> <https://w3id.org/framester/conceptnet5/data/en/imaginary_unit> risorse dalla linked data cloud