Given the task definition and input, reply with output. In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: What year was the university that Maung Thin retired from founded? Passage 1:He served as demonstrator in Botany Department of Institute of Medicine 1 from 1980 to 1981. He served as Demonstrator and Assistant Lecture in Yangon University from 1 January 1982 to 31 December 1992, served as Assistant Lecture and Lecture in Mawlamyine University from 7 January 1993 to 31 May 2000. He moved to Botany Department of Taungoo University as Associate Professor from 1 June 2000 to 11 December 2001. He became Professor and Head of Department of Botany in Mandalay University from 12 December 2001 to 21 November 2005. Meanwhile, he served as Visiting Professor from 17 January to 14 March 2004. He was promoted as Vice Rector of new Yadanabon University in 21 November 2005 until 31 March 2007. From 1 April 2007 to 26 June 2008, he became Deputy Director General of Department of Higher Education (Upper Myanmar). He served as Rector in Meiktila University from 27 June 2008 to 6 May 2014 and Mandalay University from 6 May 2014 to 31 July 2015. He retired from the education career in 2015 as the Rector of Myanmar's Second Oldest University.
Passage 2:About this time, some Dzungars informed the Kangxi Emperor that the 5th Dalai Lama had long since died. He sent envoys to Lhasa to inquire. This prompted Sangye Gyatso to make Tsangyang Gyatso the 6th Dalai Lama public. He was enthroned in 1697. Tsangyang Gyatso enjoyed a lifestyle that included drinking, the company of women, and writing love songs. In 1702, he refused to take the vows of a Buddhist monk. The regent, under pressure from the Emperor and Lhazang Khan of the Khoshut, resigned in 1703. In 1705, Lhazang Khan used the sixth Dalai Lama's escapades as excuse to take control of Lhasa. The regent Sanggye Gyatso, who had allied himself with the Dzungar Khanate, was murdered, and the Dalai Lama was sent to Beijing. He died on the way, near Kokonor, ostensibly from illness but leaving lingering suspicions of foul play. Lhazang Khan appointed a new Dalai Lama who, however, was not accepted by the Gelugpa school. Kelzang Gyatso was discovered near Kokonor and became a rival candidate. Three Gelug abbots of the Lhasa area appealed to the Dzungar Khanate, which invaded Tibet in 1717, deposed Lhazang Khan's pretender to the position of Dalai Lama, and killed Lhazang Khan and his entire family. The Dzungars proceeded to loot, rape and kill throughout Lhasa and its environs. They also destroyed a small force in the Battle of the Salween River which the Emperor had sent to clear traditional trade routes.
Passage 3:Montford was president of the Victorian Artists Society 193032. His generally good work as president was occasionally marred by a certain lack of tact. Some of Montford's best work about this period included the bronzes, "Water Nymph" and "Peter Pan", now in the Queen Victoria Gardens, Melbourne, and "The Court Favourite" in the Flagstaff Gardens, Melbourne. Other work includes relief portraits of eight Australian statesmen in the King's Hall, Parliament House, Canberra, and the war memorial for the Australian Club, Sydney. He was greatly encouraged and pleased on learning in 1934, that his statue of Adam Lindsay Gordon at Melbourne had been awarded the gold medal of the Royal British Society of Sculptors for the best piece of sculpture of the year. Another excellent piece of work is his vigorous statue of John Wesley in front of Wesley Church, Melbourne. His George Higinbotham near the treasury is less successful. Other examples of Montford's work are the memorials to Carlo Catani (St Kilda), William Benjamin Chaffey (Mildura), Sir Ross Macpherson Smith (Adelaide), and 'Pioneer Women' (Sydney). Montford is represented in the National Gallery of Victoria in Melbourne by "Atalanta", the "Spirit of Anzac", and two busts, and he is also represented in the Art Gallery of South Australia in Adelaide. He provided a model from which a portrait bust of Socrates was carved for the University of Western Australia by Victor Wager in 1932.
1