The following DataNodes have no identifier: 6
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/a76c3 (E2I)
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/f194a (Mcm)
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/fe369 (Rt)
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/ebc41 (TP60)
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/da8de (Veg?)
http://classic.wikipathways.org/instance/WP2361_r117731 http://rdf.wikipathways.org/Pathway/WP2361_r117731/DataNode/ab9da (nfkb (complex))
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier