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 "Kim Ki-duk"): Two of his films served as official submissions for Academy award for best foreign language film as South Korean entries.
Relevant evidence: No