288-0037 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Choushishi","mz:is_ceased":0,"geom:latitude":35.7276,"gn:name":"Kitaogawachou","wof:name":"288-0037","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031993,"postalcode_id":538174501,"region_id":85672797}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":140.8366,"wof:id":538174501,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577261,"wof:belongsto":["102191569",102031993,"85632429",85672797],"gn:accuracy":"","gn:adm1_name":"Chibaken","wof:concordances":{"gp:id":"26231783"},"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":"28410738","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"140.8366,35.7276,140.8366,35.7276","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"a983a17d6a6ae0afa590799dc378826a","wof:parent_id":102031993,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}