3141 is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"geom:latitude":51.918952,"wof:name":"3141","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":-1,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"locality_id":101754631,"postalcode_id":538954027,"region_id":85687041}],"mz:is_deprecated":0,"geom:area":2.3E-4,"geom:longitude":4.269515,"wof:id":538954027,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1513578008,"clustr:alpha":1,"wof:belongsto":[102191581,101754631,85633337,85687041],"mz:is_clustr":1,"wof:concordances":{"gp:id":"12851789"},"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":1755763.410746,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"4.25410509109,51.9131317139,4.28651380539,51.9249992371","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"259642742f2e33d88c0eeed692f96fc8","wof:parent_id":101754631,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}