https://w3id.org/framester/conceptnet5/data/en/afterburthen <https://w3id.org/framester/conceptnet5/schema/EtymologicallyDerivedFrom> <https://w3id.org/framester/conceptnet5/cla/enm.after> <https://w3id.org/framester/conceptnet5/cla/enm.burthen> risorse dalla linked data cloud