CREATE TABLE table_18746 ("Frequency" TEXT, "Call sign" TEXT, "Name" TEXT, "Format" TEXT, "Owner" TEXT, "Target city/ market" TEXT, "City of license" TEXT)

What market is Wessington Springs in
SELECT "Target city/ market" FROM table_18746 WHERE "City of license" = 'Wessington Springs'
SELECT "Target city/ market" FROM "table_18746" WHERE "City of license" = 'Wessington Springs'