Question: 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?
Sentence (from "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.
Relevant evidence: Yes