Question: The 71st annual Venice International Film Festival took place in Venice, Italy between which dates, "The Look of Silence" won the Silver Lion Grand Jury Prize?
Context: 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 film is a companion piece to Oppenheimer's 2012 documentary "The Act of Killing".  It was executive produced by Werner Herzog, Errol Morris, and Andre Singer.  It was nominated for the Academy Award for Best Documentary Feature at the 88th Academy Awards. The 71st annual Venice International Film Festival took place in Venice, Italy between 27 August to 6 September 2014.  The Swedish film "A Pigeon Sat on a Branch Reflecting on Existence" won the Golden Lion award.  Joshua Oppenheimer's "The Look of Silence" won the Silver Lion Grand Jury Prize. Sivas is a 2014 Turkish drama film directed by Kaan Müjdeci.  It was selected to compete for the Golden Lion at the 71st Venice International Film Festival where it won the Special Jury Prize.  The film was selected as the Turkish entry for the Best Foreign Language Film at the 88th Academy Awards but it was not nominated. Carl-Johan Westregård (born November 7, 1984) is a Swedish film director and visual effects artist.  His short film "Cams" premiered at the 71st Venice International Film Festival and was awarded the Special Jury Prize in the Lab Competition of the 2015 Clermont-Ferrand International Short Film Festival. Founded in 2012 by Scott Cross, Sean Cross, Eduardo Sanchez-Navarro Redo, Alfonso Pasquel, Juan Gallardo Thurlow, Eduardo Sanchez-Navarro Rivera Torres, and Pablo Sanchez-Navarro, the Los Cabos International Film Festival is an international film festival that takes place annually in mid-November in Los Cabos, Mexico.  The 2012 Los Cabos International Film Festival (formerly Baja International Film Festival) took place November 14–17 in Los Cabos, Mexico.  The 2013 Los Cabos International Film Festival took place November 13–16 in Cabo San Lucas, Mexico.  The 2014 Los Cabos International Film Festival took place November 12–16, 2014 in Los Cabos, Mexico.  The 2015 Los Cabos International Film Festival took place November 11–15, 2015 in Los Cabos, Mexico.  The 2016 Los Cabos International Film Festival took place November 9–13, 2016 in Los Cabos, Mexico.  The 2017 festival will take place November 8-12, 2017.  Held in one of Mexico's premier resort destinations, the festival draws attendees and filmmakers from across Mexico, the United States and around the world. Foxtrot (Hebrew: פוֹקְסטְרוֹט‎ ‎ ) is a 2017 Israeli drama film directed by Samuel Maoz.  It was screened in the competition section of the 74th Venice International Film Festival where it won the Grand Jury Prize Silver Lion.  It was also screened in the Special Presentations section at the 2017 Toronto International Film Festival.  It won the Ophir Award for Best Film, therefore becoming the Israeli entry for the Best Foreign Language Film at the 90th Academy Awards. Trap Street () is a 2013 Chinese film written and directed by debut Chinese film director Vivian Qu, and starring Lu Yulai and He Wenchao.  It premiered at the 2013 Venice International Film Festival, where it was nominated for the prestigious "Luigi De Laurentiis Award".  It subsequently won the "Dragons and Tigers Award - Special Mention" and second place in the Award itself at the Vancouver International Film Festival in the same year, and the "Grand Jury Prize" at the Boston Independent Film Festival in early 2014. Kim Ki-duk ( ] ; born December 20, 1960) is a South Korean filmmaker noted for his idiosyncratic art-house cinematic works.  His films have received many distinctions in the festival circuit, making him one of the most important contemporary Asian film directors.  Major festival awards include Golden Lion at 69th Venice International Film Festival for "Pietà", Silver Lion for Best Director at 61st Venice International Film Festival for "3-Iron", Silver bear for Best Director at 54th Berlin International Film Festival for "Samaria" and Un Certain Regard prize at 2011 Cannes Film Festival for Arirang.  His most widely known feature is "Spring, Summer, Fall, Winter... and Spring" (2003), included in film critic Roger Ebert's Great Movies.  Two of his films served as official submissions for Academy award for best foreign language film as South Korean entries.  He has given scripts to several of his former assistant directors including Juhn Jai-hong ("Beautiful" and "Poongsan") and Jang Hoon ("Rough Cut"). The 70th annual Venice International Film Festival took place in Venice, Italy from 28 August to 7 September 2013.  American film director William Friedkin was presented with a lifetime achievement award.  Italian film director Bernardo Bertolucci was the President of the Jury.  He was previously the President of the Jury at the 40th edition in 1983. " Gravity", directed by Alfonso Cuarón, was the opening film of the festival.  Italian actress Eva Riccobono hosted the opening and closing nights of the festival. Neon Bull (Portuguese: Boi neon ) is a 2015 Brazilian drama film directed by Gabriel Mascaro.  The film premiered at the 72nd Venice International Film Festival and won the Horizons (Orizzonti) - Special Jury Prize.  It was also shown in the Platform section of the 2015 Toronto International Film Festival, where it received an honorable mention from the jury.  At the 31st Warsaw International Film Festival it received the main prize of the International Competition, the Warsaw Grand Prix.
Answer: 27 August to 6 September 2014