Koroška is a region and its consensus geometry is derived from svn-sma.
{"eurostat:mount_type":"3","geom:latitude":46.531343,"mz:note":"statistical region, no administrative function","wof:name":"Koroška","counts:names_total":5,"eurostat:population_year":2022,"svn-sma:pov_km2":1040.8,"name:slv_x_preferred":["Koroška"],"wof:lang_x_spoken":["slv"],"mz:is_current":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633779,"region_id":1108959955}],"eurostat:urban_type":"3","eurostat:name_latin":"Koroška","mz:min_zoom":4,"eurostat:population":70571,"lbl:latitude":46.539795,"lbl:min_zoom":8,"eurostat:nuts_2021_level_1":"SI0","eurostat:nuts_2021_level_2":"SI03","geom:area":0.122064,"eurostat:nuts_2021_level_3":"SI033","label:eng_x_preferred_placetype":["statistical region"],"eurostat:coast_type":"3","eurostat:nuts_2021_level_0":"SI","counts:concordances_total":3,"geom:type":"Polygon","wof:lastmodified":1695885319,"wof:belongsto":[102191581,85633779],"wof:repo":"whosonfirst-data-admin-si","eurostat:nuts_2021_id":"SI033","label:slv_x_preferred_placetype":["statistična regija"],"wof:country":"SI","counts:names_preferred":5,"geom:area_square_m":1.038366899966741E9,"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"SI","geom:bbox":"14.674669,46.386538,15.44802,46.65988","svn-sma:x_c":151650,"name:eng_x_preferred":["Carinthia"],"src:lbl_centroid":"mapshaper","svn-sma:dv_od":"2002-01-03","wof:superseded_by":[],"name:fra_x_preferred":["Koroška Bela"],"wof:geomhash":"07eb4269910a512511494897785d1e82","wof:placetype_id":102312311,"eurostat:level_code":"3","wof:statistical_gore":1,"svn-sma:sr_mid":21428167,"mz:is_ceased":0,"wof:created":1493419742,"label:eng_x_preferred_longname":["Carinthia Statistical Region"],"src:population":"eurostat","src:population_date":"2022","wof:placetype":"region","label:slv_x_preferred_longname":["Koroška Statistična Regija"],"name:nor_x_preferred":["Koroška"],"eurostat:name_local":"Koroška","mz:is_deprecated":0,"geom:longitude":15.088147,"wof:population":70571,"svn-sma:sr_uime":"Koroška","wof:id":1108959955,"svn-sma:status":"V","svn-sma:d_od":"2002-01-01","wof:concordances":{"eurostat:nuts_2021_id":"SI033","iso:code_historic":"SI-03","svn-sma:id":"03"},"src:geom":"svn-sma","svn-sma:sr_id":3,"wof:tags":[],"wof:population_rank":8,"counts:names_languages":5,"wof:lang_x_official":["slv"],"svn-sma:y_c":506590,"wof:supersedes":[],"label:eng_x_variant_longname":["Koroška Statistical Region"],"lbl:longitude":15.088164,"svn-sma:enota":"SR","wof:parent_id":85633779,"wof:placetype_names":["region"],"mz:hierarchy_label":0,"eurostat:country_code":"SI","edtf:cessation":"uuuu","name:deu_x_preferred":["Koroška"]}