CREATE TABLE table_21085 ("Name" CLOB, "Latitude" CLOB, "Longitude" CLOB, "Diameter  ( km ) " CLOB, "Year named" FLOAT, "Name origin" CLOB)

What feature is at latitude 23.9S?
SELECT "Name" FROM table_21085 WHERE "Latitude" = '23.9S'
SELECT "Name" FROM "table_21085" WHERE "Latitude" = '23.9S'