https://www.omg.org/spec/Commons/Identifiers/identifiedBy
rdf:Property
@prefix cmns-id: <https://www.omg.org/spec/Commons/Identifiers/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
cmns-id:identifiedBy a rdf:Property .