Question: 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?
Sentence (from "Arne Sucksdorff"): His works include "Pojken i trädet" ("The Boy in the Tree") and the Academy Award-winning "Människor i Stad" ("Symphony of a City").
Relevant evidence: No