316-0034 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Hitachishi","mz:is_ceased":0,"geom:latitude":36.5729,"gn:name":"Higashinarusawachou","wof:name":"316-0034","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031985,"postalcode_id":538154517,"region_id":85672801}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":140.6473,"wof:id":538154517,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577231,"wof:belongsto":["102191569",102031985,"85632429",85672801],"gn:accuracy":"","gn:adm1_name":"Ibarakiken","wof:concordances":{"gp:id":"26222576"},"wof:repo":"whosonfirst-data-postalcode-jp","gn:adm3_name":"","src:geom":"gn","wof:country":"JP","counts:names_preferred":0,"gn:adm3_code":"","gp:parent_id":"28401864","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"140.6473,36.5729,140.6473,36.5729","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"e9737f71c1aa4e7b6af4993771f35055","wof:parent_id":102031985,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}