Sierakowo is a locality and its consensus geometry is derived from geonames.
{"gn:population":0,"geom:latitude":52.58077,"gn:name":"Sierakowo","wof:name":"Sierakowo","counts:names_total":2,"gn:feature_code":"PPL","gn:admin3_code":"40902.0","gn:feature_class":"P","mz:is_current":-1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633723,"county_id":102079993,"localadmin_id":1125350675,"locality_id":1293033583,"region_id":85687319}],"gn:dem":90,"mz:min_zoom":12,"lbl:min_zoom":13.5,"geom:area":0,"gn:admin2_code":"409.0","gn:latitude":52.58077,"gn:asciiname":"Sierakowo","lbl:bbox":"18.26579,52.56077,18.30579,52.60077","counts:concordances_total":2,"gn:country_code":"PL","geom:type":"Point","wof:lastmodified":1570015014,"gn:admin1_code":"73.0","wof:belongsto":[85687319,102191581,1125350675,85633723,102079993],"wof:repo":"whosonfirst-data-admin-pl","wof:country":"PL","counts:names_preferred":2,"geom:area_square_m":0,"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"PL","name:ukr_x_preferred":["Сераково"],"geom:bbox":"18.28579,52.58077,18.28579,52.58077","wof:superseded_by":[],"wof:geomhash":"d1b14ff37af41a74410d8765c7d99091","wof:placetype_id":102312317,"mz:is_ceased":0,"lbl:max_zoom":18,"wof:placetype":"locality","gn:longitude":18.28579,"mz:is_deprecated":0,"gn:modification_date":"2015-09-05","geom:longitude":18.28579,"wof:id":1293033583,"wof:concordances":{"gn:id":3085966,"wk:page":"Sierakowo%2C_Mogilno_County"},"src:geom":"geonames","name:pol_x_preferred":["Sierakowo"],"gn:geonameid":3085966,"wof:tags":[],"counts:names_languages":2,"wof:supersedes":[],"wof:parent_id":1125350675,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"gn:timezone":"Europe/Warsaw","edtf:cessation":"uuuu"}