The following DataNodes have no identifier: 3
http://classic.wikipathways.org/instance/WP1063_r117519 http://rdf.wikipathways.org/Pathway/WP1063_r117519/DataNode/dc3 (CALM1)
http://classic.wikipathways.org/instance/WP1063_r117519 http://rdf.wikipathways.org/Pathway/WP1063_r117519/DataNode/f7b (CDC42)
http://classic.wikipathways.org/instance/WP1063_r117519 http://rdf.wikipathways.org/Pathway/WP1063_r117519/DataNode/ffc (CFL1)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier