2931GZ is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469675420,"geom:latitude":51.897865,"wof:name":"2931GZ","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":-1,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":1158824749,"locality_id":101754673,"postalcode_id":890805421,"region_id":85687041}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":4.626486,"wof:id":890805421,"geom:type":"Polygon","wof:lastmodified":1513587292,"clustr:alpha":0.05,"wof:belongsto":[85687041,102191581,1158824749,85633337,101754673],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":155.821995,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"4.6263666153,51.8976135254,4.62664842606,51.8981742859","clustr:count":12,"clustr:area":1.4,"clustr:density":8.55,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"4dbc90ca3efe99b5bf8071bc8f791e25","wof:parent_id":101754673,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.13,"edtf:cessation":"uuuu"}