The following DataNodes have no identifier: 3
http://classic.wikipathways.org/instance/WP3965_r128420 http://rdf.wikipathways.org/Pathway/WP3965_r128420/DataNode/d9c4f (Fatty acid
elongation)
http://classic.wikipathways.org/instance/WP3965_r128420 http://rdf.wikipathways.org/Pathway/WP3965_r128420/DataNode/ca92d (Glycerolipid
metabolism)
http://classic.wikipathways.org/instance/WP3965_r128420 http://rdf.wikipathways.org/Pathway/WP3965_r128420/DataNode/f355b (Glycerophospholipid
metabolism)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier