CREATE TABLE table_15720 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Points" FLOAT)

What engine was in the lotus 44 f2 Chassis?
SELECT "Engine" FROM table_15720 WHERE "Chassis" = 'lotus 44 f2'
SELECT "Engine" FROM "table_15720" WHERE "Chassis" = 'lotus 44 f2'