CREATE TABLE table_14476 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" CLOB)

What engine did the mclaren mp4-20 use?
SELECT "Engine" FROM table_14476 WHERE "Chassis" = 'mclaren mp4-20'
SELECT "Engine" FROM "table_14476" WHERE "Chassis" = 'mclaren mp4-20'