CREATE TABLE table_66937 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

During the Formula One World Championships, which engine was used in 1965?
SELECT "Engine" FROM table_66937 WHERE "Year" = '1965'
SELECT "Engine" FROM "table_66937" WHERE "Year" = '1965'