At the 71st annual Venice International Film Festival, the Silver Lion Grand Jury Prize was won by a 2014 international co-produced documentary that is a companion piece to what?
The Look of Silence: The Look of Silence (Indonesian: "Senyap" , "Silence") is a 2014 internationally co-produced documentary film directed by Joshua Oppenheimer about the Indonesian killings of 1965–66. The Look of Silence:  The film is a companion piece to Oppenheimer's 2012 documentary "The Act of Killing".
i don't know