515-0042 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Matsusakashi","mz:is_ceased":0,"geom:latitude":34.5425,"gn:name":"Nijigaokachou","wof:name":"515-0042","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031547,"postalcode_id":538252329,"region_id":85672745}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":136.5554,"wof:id":538252329,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577378,"wof:belongsto":["102191569",102031547,"85632429",85672745],"gn:accuracy":"","gn:adm1_name":"Mieken","wof:concordances":{"gp:id":"26270397"},"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":"28446373","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"136.5554,34.5425,136.5554,34.5425","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"ed78b2103bfff09a3fe4dee74f73da87","wof:parent_id":102031547,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}