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: When did the school Cerny got his M.B.A. open?
 Passage 1:The October Trio is a Canadian jazz trio from Vancouver consisting of Josh Cole (bass), Dan Gaucher (drums), and Evan Arntzen (saxophone). Formed in 2004, the three met as students at Capilano College while studying jazz. Their influences are cited as being diverse, ranging from Vespertine-era Björk to the Wayne Shorter Quartet to local talents. In March 2005, they became the regular performers at the Rime, a new music hub located in East Vancouver. There, they recorded their first live album, Live at Rime in 2005. The trio released their studio album, Day In, in 2006 and in the same year, earned the title Canadian Broadcasting Corporation's Galaxie Rising Star Award for best new group at the Vancouver International Jazz Festival. The album was also nominated for a 2007 Western Canadian Music award for Jazz Album of the year. After the album, the trio began collaborating with jazz trumpeter Brad Turner in 2007 and released the album Looks Like It’s Going to Snow in 2009. Turner, had previously produced Day In and is also the producer for the new record. The album is noted for its lyricism and rich arrangements. One review notes that "it easily and off-handedly incorporates funk and rock elements without becoming a collection that is dominated by a backbeat aesthetic." The band is also noted for its rhythmic complexity, as songwriter Cole enjoys the frequent play with irregular time signatures and unusual phrase lengths. The trio has also opened for Dave Holland and the Monterey Quartet.
 Passage 2:The Secretary-general of the Communist Party of China () was a senior leadership position of the Communist Party of China to assist in the daily work of the Central Committee. The Secretary-general was established at the beginning of the founding of the Chinese Communist Party. However, due to the loss of information during the Long March and the Chinese Civil War, the records of the early Secretary-generals were incomplete. Deng Xiaoping, the second-generation leader of China, served 3 times in the early years as the secretary-general of the Central Committee . The position of the Secretary-general was renamed as General Secretary from 1956 to 1966 and from 1980 to 1982. At that time, the leader of the Communist Party was Chairman of the Central Committee. The General Secretary assisted the Party Chairman and Vice Chairmen in handling works of the Secretariat . Deng Xiaoping and Hu Yaobang successively served as the Secretary-general and General Secretary during the period of Chairman Mao Zedong and Chairman Hua Guofeng respectively .
 Passage 3:Keith Cerny is an American opera director and businessman. From 2004-2007 he was Executive Director and CFO of the San Francisco Opera and from 2010-2018 he was General Director of the Dallas Opera. In 2018 he was appointed General Director of the Calgary Opera. He is also the former CEO of Sheet Music Plus (2008-2010), the world's largest interest-based sheet-music company. He is a graduate of the University of California, Berkeley (B.A. in Music and B.S. in Physics), the Harvard Business School (M.B.A.), and the Open University in the United Kingdom (Ph.D. in Economic Development Studies/Econometrics). He also studied conducting, voice, and accompanying at the Guildhall School of Music and Drama in London and studied opera-accompanying in English National Opera's répétiteur training course. He also worked for McKinsey & Company for six years where he was a Senior Engagement Manager, and seven years with the consulting firm Accenture. He is also an Executive Board Member for Opera America.
3