Question: Who was the director of the film that won Best Film at the 12th Lumières Awards?
Sentence (from "Tell No One"): Written by Canet and Philippe Lefebvre and starring François Cluzet, the film won four categories at the 2007 César Awards in France: Best Director (Guillaume Canet), Best Actor (François Cluzet), Best Editing and Best Music Written for a Film.
Relevant evidence: No