990-0847 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Yamagatashi","mz:is_ceased":0,"geom:latitude":38.2589,"gn:name":"Sunada","wof:name":"990-0847","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031897,"postalcode_id":538142539,"region_id":85672853}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":140.2906,"wof:id":538142539,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577212,"wof:belongsto":["102191569",102031897,"85632429",85672853],"gn:accuracy":"","gn:adm1_name":"Yamagataken","wof:concordances":{"gp:id":"26216902"},"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":"28396219","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"140.2906,38.2589,140.2906,38.2589","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"b7a4804477cb405ee896b2d6b709119a","wof:parent_id":102031897,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}