491-0902 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Ichinomiyashi","mz:is_ceased":0,"geom:latitude":35.3101,"gn:name":"Ishikichou","wof:name":"491-0902","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","locality_id":102031723,"postalcode_id":538241113,"region_id":85672731}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":136.7868,"wof:id":538241113,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577361,"wof:belongsto":["102191569",102031723,"85632429",85672731],"gn:accuracy":"","gn:adm1_name":"Aichiken","wof:concordances":{"gp:id":"26265213"},"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":"28440996","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"136.7868,35.3101,136.7868,35.3101","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"4b51dff92bf7251b189be291286f29aa","wof:parent_id":102031723,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}