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: Who was the head coach of the college that Mench attended during his playing years there? Passage 1:Jersey Shore was incorporated as a borough on March 15, 1826. The history of Jersey Shore begins about 50 years before it was incorporated and on the opposite bank of the West Branch Susquehanna River in what is now Nippenose Township. Colonel John Henry Antes arrived in 1772 and established a homestead along the banks of Antes Creek. Antes also built a gristmill and his fortified home, Fort Antes, provided a safe haven for the early settlers against raids conducted by Loyalist and Indian forces during the American Revolution. Settlers who had sought refuge at Fort Antes and had returned to the right bank of the West Branch to milk their cows were among the first killed when Fort Antes was attacked just prior to the Big Runaway. These pioneers on the north side of the river were counted among the Fair Play Men, a group of squatters who lived outside the jurisdiction of the colonial and revolutionary governments of Pennsylvania. Many of the settlers did not return to the area until after Sullivan's Expedition had forced the Lenape and other Indians allied with the British further west.
 Passage 2:Mench attended The Independence School and St. Mark's High School in Delaware. Following high school, Mench attended the University of Delaware where he led the Blue Hens to the NCAA tournament in and . In 1998, Mench led the NCAA with 33 home runs and knocked in 72 runs to earn Collegiate Baseball National Player of the Year and consensus All-America Honors. In the America East, he was named Rookie of the Year in 1997 and Player of the Year in 1998 and 1999. In 1998, he played collegiate summer baseball for the Chatham A's of the Cape Cod Baseball League. On June 2, 1999, the Texas Rangers drafted Mench in the fourth round with the 118th overall pick. For his accomplishments, Mench was inducted into the University of Delaware athletics hall of fame in 2005.
 Passage 3:Kilekwa was born in Zambia, in a Bissa village, in the Mbisa tribe, near Lake Bangweulu. He was born "Chilekwa"; Ki-, he says in his autobiography, "is a Swahili prefix". He was enslaved in the 1870s as a boy in what he called "the Maviti wars" (the term may point to "any brigand rather than to a specific ethnic group"). His mother was unable to pay his ransom — eight yards of calico cloth—and he was taken to the coast, headed for the Persian Gulf. However, the ship of his enslavers was stopped by the Royal Navy; HMS Osprey took them to Muscat. The group spent a month or so there, but then Kilekwa and another boy, Mambwala, were volunteered to serve on the Osprey and become seamen. They did odd jobs while the Osprey, looking for slave dhows, sailed throughout the Gulf and up the Euphrates to Basra (in present-day Iraq). One day, while most of the sailors were on shore in Bushehr, Persia, slavers tried to kidnap them but were prevented. They traveled as far as India and went sightseeing in Bombay. When the Osprey was to return to England, the two were transferred to HMS Bacchante; they were in Bombay again for the Golden Jubilee of Queen Victoria in 1887.

Solution:
2