https://w3id.org/framester/conceptnet5/data/en/center_of_attention <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/center.n> <https://w3id.org/framester/conceptnet5/data/en/attention.n> risorse dalla linked data cloud