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: Of the Canadian Football league teams where  Corey Chamblin has coached, which team is the most recent to win a Grey Cup championship? Passage 1:Definitive INXS is a two-CD compilation of Australian rock band INXS released in 2002. It has almost the same track listing as The Best of INXS. The compilation features most of their hit singles, as well as two previously unreleased tracks, "Salvation Jane" and "Tight". "Salvation Jane" is an outtake taken from the X sessions in 1990. The 2002 remaster of X features the song's original demo. "Tight" was written by songwriter and multi-instrumentalist Andrew Farriss and recorded by the band during the sessions for Welcome to Wherever You Are in 1992. The song was reworked by the remaining members of INXS in 2002 after the death of vocalist Michael Hutchence in 1997. The compilation also features a cover of Steppenwolf's "Born to Be Wild", which was specially recorded for the April 1993 launch of Virgin Radio in the UK and was first included on the Japanese release of Full Moon, Dirty Hearts.
 Passage 2:Chamblin began his coaching career with the Frankfurt Galaxy of NFL Europe in 2006 before joining the Winnipeg Blue Bombers of the Canadian Football League in 2007 as the defensive backs coach. He then spent three seasons with the Calgary Stampeders in the same capacity while winning his first Grey Cup championship in 2008. He was then hired as the defensive coordinator of the Hamilton Tiger-Cats for the 2011 CFL season. On December 15, 2011, Chamblin was hired as the head coach of the Saskatchewan Roughriders. On November 10, 2013, Chamblin won his first CFL head coaching career playoff game, a 29–25 win over the BC Lions. On November 17, 2013, Chamblin won the West Final over the Calgary Stampeders, taking the Roughriders to the Grey Cup, which they won on November 25, the first time in his head coaching career.
 Passage 3:His father having been killed in 1942 while on active duty during World War II, Bathurst succeeded to the family titles on the death of his grandfather, the 7th Earl Bathurst, in 1943. He joined the military in 1948, when he was appointed a Governor of the Royal Agricultural College. Lord Bathurst was commissioned, served in the 10th Royal Hussars and later the Royal Gloucestershire Hussars, and promoted Captain in the Territorials to the local cavalry regiment, the Royal Gloucestershire Hussars. While working on his estate he was made Joint MFH of the Vale of White Horse hunt. He later held political office under Harold Macmillan as a Lord-in-Waiting (government whip in the House of Lords) from 1957 to 1961. The Conservative government recommended him as a Deputy Lieutenant of the county in 1960. Briefly he was promoted a junior minister as Joint Under-Secretary of State for the Home Department from 1961 to 1962. He was a Deputy Lieutenant for Gloucestershire from 1960 to 1986, following which he left politics to run the family estate based around Cirencester Park.

Solution:
2