Who's film "Le Monde du silence" won the Palme d'Or in 1956 and the Academy Award for Best Documentary in 1957, Louis Malle or  Arne Sucksdorff?
Louis Malle: Louis Marie Malle (] ; 30 October 1932 – 23 November 1995) was a French film director, screenwriter, and producer.
i don't know