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: How long did Sonny King and Jay Strongbow hold their title for before Tanaka took it? Passage 1:However, when tried at for the first time at hooker in 1992 against Manly at Carlaw Park, McCormack impressed immediately for his workrate and his ability to dart out of the dummy half position. McCormack was selected to represent New South Wales in game I of the 1992 State of Origin series and game II of the 1993 series when he replaced Benny Elias as hooker. Eventually becoming captain of the Knights, he was signed by Newcastle's new cross-town rivals the Hunter Mariners for the 1997 Super League (Australia) season. After that McCormack moved to the Super League to play for English club Wigan Warriors. He was named in 1998's Super League Dream Team. He also played at hooker for Wigan Warriors in their 1998 Super League Grand Final victory over Leeds Rhinos.
 Passage 2:John Backus was born and raised in Portland, Oregon, where he studied at Reed College, receiving a BA in 1932. He went on to graduate studies at the University of California, Berkeley, where he did research in nuclear physics at the Radiation Laboratory under Ernest Lawrence. He received an MA in 1936, and a PhD in 1940. In 1945 he was appointed Professor of Physics at the University of Southern California, a post he retained until his retirement in 1980. During the early part of his career, his research focussed on gaseous discharges in strong magnetic fields. He was also a musician, trained as a performer on piano, bassoon, clarinet and other woodwinds and received the degree of MMus in conducting from the University of Southern California in 1959. In his later career he turned increasingly to the study of musical acoustics, particularly those of wind instruments and organ pipes. In 1969 he published The Acoustical Foundations of Music, a book which became a standard text for introductory courses in musical acoustics. A second edition appeared in 1977. He received the Silver Medal of the Acoustical Society of America in 1986. Backus died in Los Angeles in 1988.
 Passage 3:Tanaka subsequently teamed with Mitsu Arakawa in the WWF, acquiring the International Tagteam Championship; losing it at Madison Square Garden to Tony Marino and Victor Rivera. The team of Tanaka and Fuji won three WWWF World Tag Team Championships, with Blassie as manager for the third reign and The Grand Wizard as manager for the first two. They first won the belts from Sonny King and Chief Jay Strongbow on June 27, 1972 in Philadelphia, PA at a House show. They lost the belts to Haystacks Calhoun and Tony Garea on May 30, 1973, again at a Hamburg house show, but regained them on September 11, 1973 in Philadelphia, PA before losing them again to Tony Garea and Dean Ho on November 14, 1973, again in Hamburg. Their third win came on September 27, 1977 at a Philadelphia house show when they defeated Tony Garea and Larry Zbyszko in a tournament final for the vacant belts, holding them until March 14, 1978 when they lost the titles to Dino Bravo and Dominic DeNucci in Philadelphia. This third reign set a record for number of championship reigns which would be equalized by The Wild Samoans in 1983, Demolition in 1990, Money Inc. in 1993, The Quebecers in 1994 and The Smoking Gunns in 1996, but not bettered until The New Age Outlaws won a fourth reign in 1999.

A:
3