Given the task definition, example input & output, solve the new input case.
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: 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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Output: 1
The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input case for you: Question: How many students were enrolled in the University of Kansas the year Schnellbacher was born? Passage 1:A week after graduating from AMDA she was cast in the role of Maureen Johnson in the U.S. national tour of Rent. Levy then played the role of Penny Pingleton in both the Broadway and U.S. national tour companies of Hairspray after understudying the role in the Toronto company. During this time, she also covered the role of Amber Von Tussle. In 2008, Levy starred as Elphaba in the Los Angeles sit-down production of Wicked. She had previously understudied the role on Broadway and briefly served as standby in Los Angeles. She next starred as Sheila in the Broadway revival of Hair in 2009–2010 at the Al Hirschfeld Theatre. She transferred to the West End revival in 2010 at the Gielgud Theatre.
 Passage 2:Otto Ole Schnellbacher (April 15, 1923 – March 10, 2008) was an American football defensive back in the National Football League for the New York Giants. He was a 2-time Pro Bowler. Also a professional basketball player, Schnellbacher played for the Basketball Association of America's Providence Steamrollers and St. Louis Bombers in 1948–49. In college, Schnellbacher was a two-sport star at the University of Kansas, earning him the nickname "the double threat from Sublette". On the gridiron, Schnellbacher, along with teammate Ray Evans, was KU's first football All-American in 1947. That same season, Schnellbacher led the Jayhawks to a Big 6 conference title and an Orange Bowl berth. Schnellbacher also excelled in basketball, where he was a four-time first-team all-conference selection (one of only three Jayhawks to do so). He was a member of the 1943 Big Six conference championship team (which also featured All-American teammates Charles B. Black and the aforementioned Ray Evans) that is regarded as one of the program's greatest teams.
 Passage 3:A Military Shield detachment was present at the Palmyra frontline in December 2016, when ISIL launched a large-scale offensive in the area. This unit was later accused by the Tiger Forces to have fled in disarray after the first serious Islamist attacks, leaving Palmyra and Tadmor's remaining pro-government defenders to their fate. Soon after, Palmyra fell to ISIL, and the Military Security Shield Forces were among the pro-government units that sent reinforcements to help defend the nearby Tiyas Military Airbase from the next Islamist attack. The unit was also involved in the following government counter-offensive in the area. On 23 February 2017, al-Masdar News reported that over 900 Syrian Marines had joined the Military Security Shield Forces in order to avoid being drafted into the regular army. In June 2017, the Military Shield Forces took part in an anti-ISIL offensive in eastern Hama. Later that year, the militia took part in the battle to retake all of Deir ez-Zor city from ISIL. Afterwards, Military Shield militiamen began to garrison towns in eastern Syria which had been retaken from ISIL, such as Mayadin. The pro-opposition Syrian Observatory for Human Rights accused the militia of requisitioning food from local civilians during this time.

Output:
2