https://w3id.org/framester/conceptnet5/data/en/efficacious <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/effect> <https://w3id.org/framester/conceptnet5/cla/fro.efficacieux> risorse dalla linked data cloud