https://w3id.org/framester/conceptnet5/data/en/ultrametric.a <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/metric> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/metric> <https://w3id.org/framester/conceptnet5/data/en/triangle_inequality> risorse dalla linked data cloud