The following DataNodes have no identifier: 3
http://classic.wikipathways.org/instance/WP3277_r117572 http://rdf.wikipathways.org/Pathway/WP3277_r117572/DataNode/ea814 (CEBPB)
http://classic.wikipathways.org/instance/WP3277_r117572 http://rdf.wikipathways.org/Pathway/WP3277_r117572/DataNode/eaf83 (JUND)
http://classic.wikipathways.org/instance/WP3277_r117572 http://rdf.wikipathways.org/Pathway/WP3277_r117572/DataNode/c1e05 (KRAS)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier