CREATE TABLE table_203_515 (id NUMBER, "rank" NUMBER, "city" CLOB, "passengers" NUMBER, "ranking" NUMBER, "airline" CLOB)

the least number of passengers came from which city
SELECT "city" FROM table_203_515 ORDER BY "passengers" LIMIT 1
SELECT "city" FROM "table_203_515" ORDER BY "passengers" FETCH FIRST 1 ROWS ONLY