Soma is a county and its consensus geometry is derived from meso.
{"meso:gadm_admin":"Sōma","meso:gaul_admin":"Soomasi","geom:latitude":37.782822,"wof:name":"Soma","counts:names_total":4,"mz:is_current":0,"wof:hierarchy":[{"continent_id":0,"country_id":0,"county_id":1108741205,"region_id":85672835}],"meso:source":"GSIJ","meso:name_alt":"Soma","lbl:latitude":37.791331,"meso:hasc_id":"JP.FS.SG","geom:area":0.020227,"counts:concordances_total":0,"edtf:deprecated":"2016-12-08","geom:type":"Polygon","wof:lastmodified":1511300739,"meso:admin_1":"Fukushima Ken","wof:belongsto":[0,85672835],"meso:gadm_hasc2":"NO DATA","mps:latitude":37.791331,"wof:repo":"whosonfirst-data-admin-jp","wof:country":"JP","counts:names_preferred":1,"geom:area_square_m":1.97668331015036E8,"counts:names_variant":3,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"JP","geom:bbox":"140.677902222,37.7216644287,141.012405396,37.8437347412","name:eng_x_preferred":["Soma"],"src:lbl:centroid":"mapshaper","wof:superseded_by":[1108740161],"wof:geomhash":"ec0fac1667b15b8913a035f79351a960","wof:placetype_id":102312313,"mz:is_ceased":0,"wof:created":1479150886,"wof:placetype":"county","meso:mps_y":37.791331,"meso:mps_x":140.904431,"mz:is_deprecated":1,"geom:longitude":140.876596,"wof:id":1108741205,"wof:concordances":{},"name:eng_x_variant":["Soomasi","Sōma","Soma Shi"],"src:geom":"meso","wof:tags":[],"counts:names_languages":1,"meso:local_id":"07209","mps:longitude":140.904431,"meso:name_en":"Soma Shi","wof:supersedes":[],"lbl:longitude":140.904431,"wof:parent_id":85672835,"wof:placetype_names":["county"],"mz:hierarchy_label":1,"edtf:cessation":"uuuu"}