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 many cast members did Line of Duty when it premiered on BBC2? Passage 1:The music for the film was composed by Barry De Vorzon and Perry Botkin Jr.. Their score for the movie included an instrumental selection titled "Cotton's Dream", which was later rescored to become the theme song of the soap opera The Young and the Restless; this was produced by Columbia's television division, now Sony Pictures Television. The soundtrack for the film also includes the movie's theme song, performed by The Carpenters. In late July or early August 1976, when ABC's sports summary program Wide World of Sports produced a montage of Romanian gymnast Nadia Comăneci's routines during the 1976 Summer Olympics and used "Cotton's Dream" as the background music, the song gained more popularity and was subsequently released in a re-edited and lengthened form as "Nadia's Theme", a title under which it became best known. (Comăneci herself never performed her floor exercises using this piece of music, however.) De Vorzon and Botkin Jr. also wrote lyrics for "Cotton's Dream" but no vocal version of it was known to have charted .
 Passage 2:He was by far the brightest performer as Bengal (captained by Sourav Ganguly) won its first Vijay Hazare Trophy in 2012. In the group stage match against Jharkhand at Eden Gardens, he scored 151* from 96 balls (16 fours, 8 sixes) to chase down Jharkhand's score of 280/6 in just 38.1 overs. In the next match against Tripura at the Jadavpur University Sports Complex, after being bowled out to only 198 in 49 overs, he took 4/37 (and Sanjib Sanyal took 4/33 from his 8 overs) to bowl out Tripura for just 168 in 37.4 overs. In the quarter final, he took 2/37 against Madhya Pradesh. He took the wicket of Punjab's highest scorer Mandeep Singh (66) in the semifinal. In the final against Mumbai led by Ajit Agarkar, he took 4/38 (including openers Wasim Jaffer and Ajinkya Rahane) to bowl out Mumbai for only 248, and then chased it down with a 107* off 83 ball-partnership with Anustup Majumdar. He scored 106* from 90 balls, and Anustup Majumdar scored 50* from 45 balls to win the Vijay Hazare Trophy with 23 balls to spare.
 Passage 3:Mercurio's next original drama series, Line of Duty (first broadcast 26 June 2012), premiered as BBC2's then best-performing drama series in 10 years with 4.1 million viewers. A well-received second series (first broadcast 12 February 2014) resulted in the BBC commissioning two further series for production in 2015 and 2016. The first series was nominated for a Royal Television Society Award for Best Drama Series and earned Mercurio his third nominations as Best Drama Writer by the Royal Television Society and The Writers' Guild of Great Britain. In 2014, Line of Duty was named in the Top 50 BBC2 Shows of All-Time, and named best television drama of the year by The Observer, and in 2016 ranked among the best BBC shows of all time and among the best police series of all time. In 2015, the second series won the Royal Television Society Award for Best Drama Series. and was nominated for four BAFTA Awards. Series 3 of Line of Duty became the most watched drama series broadcast on BBC2 in the multichannel era. Series 4 transferred to BBC One, consisting of six episodes broadcast from 26 March 2017.

A:
3