Question: Who wrote the French drama film that opened the 1959 Cannes Film Festival?
Sentence (from "The 400 Blows"): The 400 Blows (French: "Les Quatre Cents Coups" ) is a 1959 French drama film, the debut by director François Truffaut; it stars Jean-Pierre Léaud, Albert Rémy, and Claire Maurier.
Relevant evidence: Yes