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 much square mileage in total did India retain? Passage 1:His first major exposure was starring in Oh Grow Up, a short-lived sitcom created by Alan Ball. He later played the role of Steven Keats for two seasons in the NBC sitcom Three Sisters. He appeared in the 2005 motion picture War of the Worlds in the role of Tim, the stepfather of Dakota Fanning and Justin Chatwin's characters. In 2006 he played Todd Beamer in United 93. David landed the lead role in 2007's I'll Believe You, a family-friendly sci-fi comedy. In 2008 he was "Mike Harness" in Lipstick Jungle on NBC for two seasons, and simultaneously played "Kenny Kagan" on The Starter Wife on USA. In 2010 he guest starred on , White Collar,  and The Mentalist. He appeared in the film Sex and The City 2 as a guest at the wedding. Basche had a small role in the 2017 mystery film The Vanishing of Sidney Hall.
 Passage 2:Prior to 1947, Baltistan was part of the princely state of Jammu and Kashmir, having been conquered by Raja Gulab Singh's armies in 1840. Baltistan and Ladakh were administered jointly under one wazarat (district) of the state. Baltistan retained its identity in this set-up as the Skardu tehsil, with Kargil and Leh being the other two tehsils of the district. After the Maharaja of Jammu and Kashmir acceded to India, Gilgit Scouts overthrew the Maharaja's governor in Gilgit and captured Baltistan. The Gilgit Agency and Baltistan have been governed by Pakistan ever since. The Kashmir Valley and the Kargil and Leh tehsils were retained by India. A small portion of Baltistan, including the village of Turtuk in the Nubra Valley, was incorporated into Ladakh after the Indo-Pakistani War of 1971.
 Passage 3:Sætren studied at Lillehammer Latin- og Realskole, at Qvams skole in Christiania and at the Swiss Federal Institute of Technology Zurich from 1862 to 1865. In 1866 he started working as a draftsman for Kanalvæsenet, the body for exploitation of Norwegian water resources, and held various positions at Kanalvæsenet over a period of 41 years. He ended his career as manager for the Bandak-Norsjø Canal from 1891 to 1907. The boat locks of the Bandak-Norsjø Canal could lift boats with a length of up to 100 feet. The canal became an important water transport system, and also a tourist destination. Sætren was a counsellor for industrialist Sam Eyde, the founder and first mangager of Norsk Hydro, who acquired rights for exploiting waterfalls for hydroelectric power. Sætren published maps and overviews of water resources in Norway, such as his map  from 1904. He was the first editor of the magazine Norsk Teknisk Tidsskrift, which he edited from 1883 to 1886. He was also a proponent for the construction of the Holmenkoll Line, and chaired the board of directors for ten years from 1896. He was decorated Knight of the Royal Norwegian Order of St. Olav in 1893.
Solution: 2