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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Example solution: 1
Example explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Problem: Question: How many cylinders was the Skytrain's engine? Passage 1:The Dufek Coast is that portion of the coast along the southwest margin of the Ross Ice Shelf between Airdrop Peak on the east side of the Beardmore Glacier and Morris Peak on the east side of Liv Glacier. It was named by the New Zealand Antarctic Place-Names Committee in 1961 after Rear Admiral George J. Dufek, United States Navy, who served under Rear Admiral Richard E. Byrd with the United States Antarctic Service, 1939–41, and as commander of the Eastern Task Force of U.S. Navy Operation Highjump, 1946–47. He was Commander of U.S. Naval Support Force Antarctica, 1954–59, a period in which the following American science stations were established: McMurdo Station, Little America V, Byrd Station, South Pole Station, Wilkes Station, Hallett Station and Ellsworth Station. United States Navy ships, aircraft, and personnel under his command provided broad logistical support to research and survey operations, including aerial photographic missions to virtually all sectors of Antarctica. On October 31, 1956, Dufek in the ski-equipped R4D Skytrain aircraft Que Sera Sera (pilot Lieutenant Commander Conrad Shinn), flew from McMurdo Sound via Beardmore Glacier to make the first airplane landing at the South Pole.
 Passage 2:The Royals began operations with General Manager Cedric Tallis, who soon developed a reputation as the best trader in the league. The first big trade was with fellow expansion team Seattle, which brought in 1969 Rookie of the Year Lou Piniella. In their inaugural game, on April 8, 1969, the Royals defeated the Minnesota Twins 4-3 in 12 innings. Two pitching stars from the Baltimore Orioles team that won the 1966 World Series pitched for the Royals in the inaugural game: Wally Bunker threw the franchise's very first pitch, and Moe Drabowsky won the game in relief. After finishing the season in 5th place, the Royals' next trade cemented a reputation as a speedy team. Third baseman Joe Foy was traded to the New York Mets for speedy outfielder Amos Otis, who would become the Royals' first star. Further one-sided trades brought to the Royals second baseman Cookie Rojas, bullpen ace Ted Abernathy, shortstop Fred Patek, first baseman John Mayberry and left fielder Hal McRae. The Royals also invested in a strong farm system and in the early years developed such future stars as pitchers Paul Splittorff and Steve Busby, infielders George Brett and Frank White, and outfielder Al Cowens.
 Passage 3:Rimington was born Stella Whitehouse in South London, England; her family moved from South Norwood to Essex in 1939, due to the danger of living in London during World War II. Her father got a job as chief draughtsman at a steel works in Barrow-in-Furness in Cumbria, and the family moved there and she was educated at Crosslands Convent School after spending some time in Wallasey. When her father got a job in Ilkeston, Derbyshire, the family moved to the Midlands, where Stella attended Nottingham High School for Girls. She spent her last summer of secondary school working as an au pair in Paris, before enrolling at the University of Edinburgh in 1954 to study English. By chance, she met her future husband, John Rimington, whom she had known from Nottingham.
Solution: 1