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

was los angeles or houston the busiest international route at manzanillo international airport in 2013 ?
SELECT "city" FROM table_203_515 WHERE "city" IN ('los angeles', 'houston') ORDER BY "passengers" DESC LIMIT 1
SELECT "city" FROM "table_203_515" WHERE "city" IN ('los angeles', 'houston') ORDER BY "passengers" DESC FETCH FIRST 1 ROWS ONLY