Question: The 71st annual Venice International Film Festival took place in Venice, Italy between 27 August to 6 September 2014, Joshua Oppenheimer, won the Silver Lion Grand Jury Prize for which 2014 internationally co-produced documentary film, about the Indonesian killings of 1965–66?
Sentence (from "List of accolades received by The Act of Killing"): "The Act of Killing" (Indonesian: "Jagal" ) is a 2012 Danish-British-Norwegian documentary film directed by Joshua Oppenheimer, Christine Cynn, and an anonymous Indonesian co-director.
Relevant evidence: No