791-1709 is a postalcode and its consensus geometry is derived from gn.
{"gn:adm1_code":"","gn:adm2_name":"Kamiukenagun'Omogomura","mz:is_ceased":0,"geom:latitude":33.6873,"gn:name":"Ainoki","wof:name":"791-1709","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":"102191569","country_id":"85632429","postalcode_id":538325689,"region_id":85672711}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":133.0834,"wof:id":538325689,"counts:concordances_total":1,"geom:type":"Point","wof:lastmodified":1474577489,"wof:belongsto":["102191569","85632429",85672711],"gn:accuracy":"","gn:adm1_name":"Ehimeken","wof:concordances":{"gp:id":"26305769"},"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":"28480459","wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","counts:names_languages":0,"geom:bbox":"133.0834,33.6873,133.0834,33.6873","gn:adm2_code":"","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"c21a2f1741a30a2cf63064fab73c6091","wof:parent_id":85672711,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}