The following DataNodes have no identifier: 3
http://www.wikipathways.org/instance/WP1015_rr117614 http://rdf.wikipathways.org/Pathway/WP1015_rr117614/DataNode/b3056 (Fatty Acid metabolism)
http://www.wikipathways.org/instance/WP1015_rr117614 http://rdf.wikipathways.org/Pathway/WP1015_rr117614/DataNode/a5c51 (Pyruvate metabolism)
http://www.wikipathways.org/instance/WP1015_rr117614 http://rdf.wikipathways.org/Pathway/WP1015_rr117614/DataNode/d9d89 (Sterol biosynthesis)