Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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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Solution: 1
Reason: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Now, solve this instance: Question: How long is the Tsarigrad Road in total? Passage 1:Allen moved to Lymington, Hampshire in 1964, when his parents took over The Mayflower pub in the town. Shortly after moving there, he began playing for Lymington Cricket Club, where he was initially encouraged to be a seam bowler. While bowling slow left-arm orthodox in the nets at the County Ground, Southampton, he was spotted by Arthur Holt who encouraged him to stick with that bowling style. Having impressed in club cricket for Lymington, Allen briefly played for the Hampshire Second XI, before being selected to play minor counties cricket for Dorset, making his debut for the county in the 1976 Minor Counties Championship against Cornwall. From 1976 to 1983, Allen played a total of 66 Minor Counties Championship matches, the last of which came against Shropshire. He also made a single appearance for the county in the 1983 MCCA Knockout Trophy against Oxfordshire. He took a total of 252 wickets for Dorset. Allen also made a sole List A appearance for Dorset in the 1983 NatWest Trophy against first-class opponents Essex at Dean Park, Bournemouth. In Dorset's innings 111 all out, Allen was dismissed for 7 runs by Neil Foster, while in Essex's innings he bowled 6 wicketless overs and caught Keith Fletcher, with Essex winning by 7 wickets.
 Passage 2:The Sixth Army Group was originally created in Corsica, France (specifically activated on 29 July 1944) as "Advanced Allied Force HQ", a special headquarters within AFHQ (the headquarters of Henry Maitland Wilson, the Supreme Commander Mediterranean Theatre) commanded by Lieutenant General Jacob L. Devers. Its initial role was to supervise the planning of the combined French and American forces which invaded southern France in Operation Dragoon and provide liaison between these forces and AFHQ. Dragoon was the operational responsibility of the Seventh United States Army commanded by Lt. Gen. Alexander Patch. Available to Patch were three corps (US VI Corps and French I and II Corps) and 24,000 Maquis of the Forces Francaises de l'Interieur. The two French corps constituted French Army B commanded by Général Jean de Lattre de Tassigny which was later renamed French First Army. Although Sixth Army Group Headquarters was officially activated on 1 August, it consisted of only the personnel of the Advanced Detachment AFHQ and, for reasons of security, retained the detachment title. The Advanced Detachment headquarters on Corsica had no command or operational duties and functioned primarily as a liaison and coordinating agency while preparing itself for the day it would become operational in France as Sixth Army Group headquarters.
 Passage 3:The garden already existed at least in the early 18th century. During the Austrian occupation of northern Serbia 1717-39, several hospitals were established in Belgrade, including the Great military hospital. Based on the Austrian plans, the hospital was set outside of the Belgrade Fortress ("Danubian" or "German Belgrade"), in the Serbian part of the city. As shown on the map of Belgrade by Nicolas François de Spar, the Tsarigrad Road began at the Württemberg Gate (Stambol Gate), at the modern Republic Square, and headed towards "Marko's cemetery" in Tašmajdan. The hospital was situated on the road's right side, where the modern Stari Dvor is located. Behind the hospital there was a large garden, predecessor of the modern park, and further behind it, across the road was the military cemetery. Later "Marko's market" developed on the spot and today it is the area surrounding the House of the National Assembly of Serbia. After Austria lost the Austro-Turkish War of 1737–1739, the northern Serbia, including Belgrade, was returned to the Turks. One of the provisions of the 1739 Treaty of Belgrade stated that Austria had to demolish all the fortifications and military and civilian buildings it has constructed during the occupation. Many Baroque buildings were demolished. However, Austria didn't demolish the buildings outside of the fortress walls, including the Great military hospital, which, albeit as a ruin, survived until the next Austrian occupation in 1788.

Student:
3