question: What is the place of birth of the director of film Peacock (2005 Film)?
context: [["John Peacock (footballer)", ["John Peacock( born 27 March 1956) is an English football manager and former professional player who currently works for FIFA, UEFA and Manchester United FC"]], ["Rowan Peacock", ["Rowan Peacock( born 31 October 1939) is a former South African cyclist.", "He competed in the team pursuit at the 1960 Summer Olympics."]], ["Dennis Peacock", ["Dennis Peacock( born 19 April 1953) is an English retired professional footballer who played as a goalkeeper."]], ["Harrison Peacock", ["Harrison Peacock( born 31 January 1991) is an Australian volleyball player.", "He competed for Australia at the 2012 Summer Olympics.", "He also competed at the 2014 FIVB Volleyball Men's World Championship."]], ["Richard Peacock (footballer)", ["Richard Peacock( born 29 October 1972 in Sheffield) is an English retired footballer who was active from between 1992 and 2006."]], ["Peacock (2005 film)", ["Peacock  is a 2005 film directed by Gu Changwei, written by Li Qiang.", "This is Gu's first film as director after a lengthy career as a cinematographer for some of China's top directors.", "The film premiered simultaneously in both China and in competition at the 2005 Berlin International Film Festival, going on to receive Berlin's Jury Grand Prix Silver Bear.", "Its original runtime was over four hours, but was reduced to 144 minutes for its theatrical release."]], ["Gary Peacock", ["Gary Peacock( born May 12, 1935) is an American jazz double- bassist."]], ["Gu Changwei", ["Gu Changwei (born 12 December 1957) is a Chinese cinematographer and film director.", "Gu was born in Xi'an, Shaanxi in the People's Republic of China.", "Gu is considered one of the major Chinese cinematographers working today."]], ["Ian Barry (director)", ["Ian Barry is an Australian director of film and TV."]], ["Jan Peacock", ["Jan Peacock( born November 6, 1955) is a Canadian interdisciplinary artist, curator and writer."]]]
supporting_facts: [["Peacock (2005 film)", 0], ["Gu Changwei", 1]]
evidences: [["Peacock", "director", "Gu Changwei"], ["Gu Changwei", "place of birth", "Xi'an"]]
answer: Xi'an