351-0031 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Asakashi","mz:is_ceased":0,"geom:latitude":35.8262,"gn:name":"Miyado","wof:name":"351-0031","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031865,"postalcode_id":538171539,"region_id":85672807}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":139.5879,"wof:id":538171539,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577257,"wof:belongsto":["102191569",102031865,"85632429",85672807],"gn:accuracy":"","gn:adm1_name":"Saitamaken","wof:concordances":{"gp:id":"26230181"},"wof:repo":"whosonfirst-data-postalcode-jp","gn:adm3_name":"","src:geom":"gn","wof:country":"JP","counts:names_preferred":0,"gn:adm3_code":"","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"139.5879,35.8262,139.5879,35.8262","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"d12cf649e0a964abacf23f22d6961d20","wof:parent_id":102031865,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}