Given the task definition, example input & output, solve the new input case.
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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Output: 1
The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input case for you: Question: How old was Reed's father when Walter L. Reed served as Inspector General of the Army? Passage 1:Oldfield, an Australian national, said he was making "a protest against inequalities in British society, government cuts, reductions in civil liberties and a culture of elitism". Oxford number two, William Zeng, denounced Oldfield and described him as "a mockery of a man", while Oxford boat club president Karl Hudspith tweeted "my team went through seven months of hell, this was the culmination of our careers and [Oldfield] took it from us". Educated at the Sydney Church of England Grammar School, the University of Sydney and the London School of Economics, and Fellow of the Royal Society of Arts, Oldfield tweeted the day after the race, "Having been deep within elite institutions I have a very good understanding of them. I protest their injustices – ask anyone that knows me". On his blog, Oldfield compared his actions to those of Emily Davison, the suffragette killed after stepping in front of the King's horse at The Derby in 1913. Despite later stating he had some sympathy for both the rowers and spectators, he said he had no regrets and that he "would have felt less of a man" had he not made the protest. In October 2012, Oldfield was jailed for six months for causing a public nuisance and ordered to pay £750 costs. In June 2013, he was refused leave to remain in the United Kingdom, the Home Office claiming his presence there was not "conducive to the public good". Oldfield, whose wife is from India, appealed on the grounds that she would be threatened in Australia, and in December 2013, the deportation order was overturned. Security for the 2013 race was increased as a result of Oldfield's actions, with Royal Marines, additional stewards and the Metropolitan Police Marine Policing Unit in attendance.
 Passage 2:Irvine Welsh was born in Leith, the port area of the Scottish capital Edinburgh. He states that he was born in 1958, though, according to the Glasgow police, his birth record is dated around 1951. When he was four, his family moved to Muirhouse, in Edinburgh, where they stayed in local housing schemes. His mother worked as a waitress. His father was a dock worker in Leith until bad health forced him to quit, after which he became a carpet salesman; he died when Welsh was 25. Welsh left Ainslie Park High School when he was 16 and then completed a City and Guilds course in electrical engineering. He became an apprentice TV repairman until an electric shock persuaded him to move on to a series of other jobs. He left Edinburgh for the London punk scene in 1978, where he played guitar and sang in The Pubic Lice and Stairway 13, the latter a reference to the Ibrox disaster. A series of arrests for petty crimes and finally a suspended sentence for trashing a North London community centre inspired Welsh to correct his ways. He worked for Hackney London Borough Council in London and studied computing with the support of the Manpower Services Commission.
 Passage 3:Walter Lawrence Reed (4 December 1877 – 1 May 1956) was a major general in the United States Army who served as Inspector General of the Army from 1 December 1935 to 23 December 1939. His father was Army Medical Corps officer Major Walter Reed, namesake of the Walter Reed Army Medical Center. He was born in Fort Apache, Arizona and moved to Washington, D.C. where he spent most of his early life. Reed fought in the Spanish–American War and traveled across the country and to the Panama Canal Zone. He then began working as an inspector during World War I and became the inspector of Base Section Number 5 in February 1919 then worked in the American Expeditionary Forces office. For his work he earned the Distinguished Service Medal. Reed attended various military schools before returning to the Inspector General's department. In 1935 he became the inspector general of the United States Army. He retired in 1940, but was recalled to active duty during World War II, filling a role in the War Department until 1946. Reed died in the Walter Reed Army Medical Center in 1956.

Output:
3