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.

Example input: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage 1: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lô during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Passage 2: John Ford (1894–1973) was an American film director whose career spanned from 1913 to 1971. During this time he directed more than 140 films. Born in Maine, Ford entered the filmmaking industry shortly after graduating from high school with the help of his older brother, Francis Ford, who had established himself as a leading man and director for Universal Studios. After working as an actor, assistant director, stuntman, and prop man – often for his brother – Universal gave Ford the opportunity to direct in 1917. Initially working in short films, he quickly moved into features, largely with Harry Carey as his star. In 1920 Ford left Universal and began working for the Fox Film Corporation. During the next ten years he directed more than 30 films, including the westerns The Iron Horse (1924) and 3 Bad Men (1926), both starring George O'Brien, the war drama Four Sons and the Irish romantic drama Hangman's House (both 1928 and both starring Victor McLaglen). In the same year of these last two films, Ford directed his first all-talking film, the short Napoleon's Barber. The following year he directed his first all-talking feature, The Black Watch.
. Passage 3: Since the late 1970s, the central part of NYU is its Washington Square campus in the heart of Greenwich Village. Despite being public property, and expanding the Fifth Avenue axis into Washington Square Park, the Washington Square Arch is the unofficial symbol of NYU. Until 2008, NYU's commencement ceremony was held in Washington Square Park. However, due to space constraints, ceremonies are now held at the Yankee Stadium. Important facilities at Washington Square are the Elmer Holmes Bobst Library, designed by Philip Johnson and Richard Foster, who also designed several other structures, such as Tisch Hall, Meyer Hall, and the Hagop Kevorkian Center. When designing these buildings Johnson and Foster also set up a master plan for a complete redesign of the NYU Washington Square campus. However, it was never implemented. Other historic buildings include the Silver Center (formerly known as "Main building"); the Brown Building of Science; Judson Hall, which houses the King Juan Carlos I of Spain Center; Vanderbilt Hall, the historic townhouse row on Washington Square North; The Grey Art Gallery at 100 Washington Square East, housing the New York University art collection and featuring museum quality exhibitions; the Kaufman Management Center; and the Torch Club – the NYU dining and club facility for alumni, faculty, and administrators. Just a block south of Washington Square is NYU's Washington Square Village, housing graduate students and junior and senior faculty residences in the Silver Towers, designed by I. M. Pei, where an enlargement of Picasso's sculpture Bust of Sylvette (1934) is displayed.
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Example output: 1
Example explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.
Q: Question: What position did George McClellan hold in the American Civil War? Passage 1: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.
 Passage 2: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 3:When the American Civil War began, Weitzel was assigned to construct defenses, including in Cincinnati and Washington, as well as for George McClellan in the Army of the Potomac in late 1861. He was then attached to the staff of Major General Benjamin F. Butler as chief engineer of the Department of the Gulf. When Union troops captured New Orleans, Weitzel became assistant military commander and acting mayor. He was promoted to brigadier general in August 1862 and two months later routed a large force of the enemy at Labadieville, Louisiana, which earned him a brevet promotion to major in the Regular Army. Weitzel commanded a brigade in the XIX Corps advancing in Major General Nathaniel P. Banks's operations in western Louisiana during April and May 1863, which led to the siege of Port Hudson. Weitzel was later brevetted lieutenant colonel in the Regular Army, "for gallant and meritorious services at the siege of Port Hudson," which fell on July 9, 1863, days after Vicksburg, Mississippi, about 120 miles upriver, the last Confederate stronghold on the great Mississippi, had fallen. Together those successful sieges and the continuing blockage of Southern ports completed the Anaconda Plan.

A:
3