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-Lo 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 (18941973) 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: How many years must pass before celebrating the type of anniversary celebrated in the Imperial Capital on a February morning? Passage 1:Afterwards Dashwood took eight American merchantmen, and on 15 June 1812, he captured the Hope, a merchant ship off the north of Gothland. On 14 August 1812 he was appointed captain of HMS Cressy of 74 guns, and given a piece of plate by the officers of HMS Pyramus. After serving in the North Sea under Admiral Sir William Young, Dashwood escorted a convoy to the West Indies, whence he returned with another of equal importance. At the review of the fleet at Spithead, in the summer of 1814, he steered the Royal barge. Afterwards he took part, commanding HMS Norge of 74 guns, in the Battle of New Orleans, where he assisted Admiral Pulteney Malcolm in the debarkation of the army, being reported by Sir Alexander Cochrane. He was also present at the Battle of Lake Borgne, where a few gunboats of the Norge, in company with other small vessels, captured five American gunboats. In 1815, when at anchor in Port Royal, his ship was struck by lightning, which broke the main-topgallant-mast in three pieces, shivered the maintop-mast and brought the mizentop-mast and topgallant-mast down on to deck. In 1821 he was given command of HMS Windsor Castle of 74 guns, and HMS Impregnable, of 104 guns, as Cochrane's flag-captain. He recommissioned Windsor Castle on 4 January 1822, as part of the guard-ships in Hamoaze. In 1825 he was put onto half-pay, and was made a rear-admiral on 22 July 1830. He assumed the rank of vice-admiral on 23 November 1841. Charles died while at service, on 21 September 1847. Consequently, on 22 September 1847, the Admiralty promoted him posthumously to the rank of admiral.
Passage 2:The tercentenary was kicked off in Imperial Capital St. Petersburg on a rainy February morning. The event had been on everyones' lips for several weeks leading up the actual date, and dignitaries from the whole of the Empire had gathered in the capital's grand hotels: princes from the Baltic and Poland, high-priests from Armenia and Georgia in the Caucasus, and mullahs and tribal chiefs from Central Asia alongside the Khan of Khiva and the Emir of Bukhara. Additionally there was a large group of visitors from the provinces and workers, which left the usual well-dressed promenaders of the Winter Palace outnumbered. The city was bustling with these visitors, and Nevsky Prospect experienced the worst traffic jams in history, due to the converging of cars, carriages and trams. The streets themselves were decorated in the Imperial colors of blue, red and white, statues were dressed up with ribbons and garlands, and portraits of the line of Tsars going all the way back to the Romanov dynasty's founder Michael were hung up on the facades of banks and stores. Over tram lines were chains of light hung up, which spelled out 'God Save the Tsar' or portrayed the Romanov double-headed eagle with '16131913' spelled out underneath it. For many of the provincial visitors this was their first sight of electric light, and they stood in wonder of the 'columns, arcs and obelisks of light'.
Passage 3:By 775, one of the military governors who had only nominally been submissive to Emperor Daizong, Tian Chengsi the military governor of Weibo Circuit (, headquartered in modern Handan, Hebei), had particularly offended not only the imperial government but also his fellow warlordsby seizing much of Zhaoyi Circuit (, headquartered in modern Anyang, Henan) after the death of its military governor Xue Song in 773; by looking down on Li Zhengji the military governor of Pinglu Circuit (, headquartered in modern Tai'an, Shandong) and Li Baochen the military governor of Chengde (, headquartered in modern Shijiazhuang, Hebei); and by killing Li Baochen's brother Li Baozheng (), who was also his son-in-law, after his own son Tian Wei () died after colliding with Li Baozhen while playing polo. Li Baochen and Li Zhengji thus offered to attack Tian, and Emperor Daizong decided to take this opportunity to destroy the rebellious Tian. As Zhu Tao was then submissive to the imperial government, he joined forces with Li Baochen and another general loyal to the imperial government, Xue Jianxun (), to attack Weibo from the north, while Li Zhengji and Li Zhongchen attacked from the south. The joint forces had initial successes, but when Zhu and Li Baochen attacked Cang Prefecture (, in modern Cangzhou, Hebei), which was defended by Tian's cousin Tian Tingjie (), they could not capture it quickly. Meanwhile, Tian Chengsi had persuaded Li Zhengji to withdraw with flattery. In addition, Li Baochen was offended when an imperial eunuch, Ma Chengqian (), who had visited Li Baochen's army, was so dissatisfied with Li Baochen's gift to him that he threw it on the ground, and Tian was also able to use hoaxes to persuade Li Baochen that if he joined forces with Tian to attack Lulong, he would be successful. Li Baochen thus turned against Zhu, launching a surprise attack on him, but was unable to kill Zhu, effectively ending any hopes of the campaign against Tian and subsequently creating an enmity between the Chengde and Lulong Circuits. Emperor Daizong was subsequently forced to reaccept Tian Chengsi's nominal submission.

Solution:
2