You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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 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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Solution: 1
Why? The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input: Question: What date did Mercedes win their first World Constructors' Championship? Passage 1:Barbour married Elise Barbour, a distant relative (b. Paterson, New Jersey, USA in 1873); Lady Barbour died at their home, Conway House, Dunmurry, in 1910. The couple had three daughters and one son, John Milne Jnr., whose aeroplane went missing whilst flying over the Irish sea in 1937. John was a civilian pilot (a former competitor in the King's Cup Race) who would fly home at the weekends from the Barbour factory in Glasgow, where he worked during the week. Barbour's sister, Helen, married Thomas Andrews, architect of the Titanic. Barbour was a Freemason. He was described by diarist Lillian Dean, later Lady Spender (wife of Sir Wilfrid Spender) as "a curious man who looks like a stage Mephistopheles but is given to preaching in dissenting chapels." A deeply religious man throughout his life he served on as a Member of the General Synod of the Church of Ireland. presented the East Window to Christ Church Cathedral, Lisburn, in memory of his wife and son. The baronetcy became extinct upon his death, Barbour was predeceased by his son.
 Passage 2:Mercedes won their first World Constructors' Championship after taking a 1–2 finish in Russia. Lewis Hamilton won his second World Drivers' Championship after a season-long battle with teammate Nico Rosberg. Rosberg won the Australian and Monaco Grands Prix, and Hamilton the races in Malaysia, Bahrain, China and Spain after retiring in Australia. The Mercedes team's run of victories ended in Canada where Rosberg and Hamilton were simultaneously hit with a power unit failure that put additional strain on their brakes. Hamilton was forced out of the race and while Rosberg was able to continue, his performance deteriorated and he ultimately finished second. Mercedes returned to the top of the podium in Austria, with Rosberg leading Hamilton across the finish line for his third victory of the season. Hamilton reclaimed ground in the championship standings in Britain winning after Rosberg was forced out with gearbox issues. Rosberg claimed the win in Germany, while Hamilton recovered to third after an accident in qualifying saw him start from twentieth place. Hamilton finished third in Hungary after starting from pit lane, ahead of Rosberg. Rosberg had to settle for second place in Belgium after contact with Hamilton early in the race, which ultimately prompted Mercedes to retire Hamilton's car. Hamilton went on to claim his sixth win of the season in Italy, ahead of Rosberg. Hamilton reclaimed the championship lead with a win in Singapore, while Rosberg was retired with a broken wiring loom. Hamilton claimed the win in rain- and accident-shortened Japan, ahead of Rosberg. Hamilton won the inaugural race in Russia, once again ahead of Rosberg. The result was enough for Mercedes to secure their first World Constructors' Championship. Hamilton took his fifth consecutive win – for the first time in his career – in the United States, again ahead of Rosberg. Rosberg took his fifth win of the season in Brazil, with Hamilton finishing in second. Hamilton carried a seventeen-point advantage into the title-deciding and went on to win the race while Rosberg struggled with electrical problems and finished outside the points. With eleven pole positions to his name, Rosberg won the inaugural FIA Pole Trophy.
 Passage 3:Mormon fiction is fiction by or about members of The Church of Jesus Christ of Latter-day Saints, also called Mormons or Latter-day Saints (LDS). Its history is commonly divided into four sections as first organized by Eugene England. During the first fifty years of the church's existence, 1830–1880, fiction was not popular, though Parley P. Pratt wrote a fictional Dialogue between Joseph Smith and the Devil. With the emergence of the novel and short stories as popular reading material, Orson F. Whitney called on fellow members to write inspirational stories. During the home literature movement, church-published magazines published many didactic stories and Nephi Anderson wrote the novel Added Upon. The generation of writers after the home literature movement produced fiction that was recognized nationally but was seen as rebelling against home literature's outward moralization. Vardis Fisher's Children of God and Maurine Whipple's The Giant Joshua were prominent novels from this time period. In the 1970s and 1980s, authors starting writing realistic fiction as faithful Mormons. Acclaimed examples include Levi S. Peterson's The Backslider and Linda Sillitoe's Sideways to the Sun. Home literature experienced a resurgence in popularity in the 1980s and 1990s when church-owned Deseret Book started to publish more fiction, including Gerald Lund's historical fiction series The Work and the Glory and Jack Weyland's novels.

Solution:
2