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 input: 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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Example output: 1
Example explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.
Q: Question: Who did the reinforcements oppose in the Battle of the Dneiper? Passage 1:The business was founded in 1953, when Ottavio and Rosita Missoni set up a small knitwear workshop in Gallarate, Italy. They presented their first collection under the Missoni label in Milan in 1958. The business prospered, with the support of fashion editor Anna Piaggi, then at Arianna magazine. Rosita met the French stylist Emmanuelle Khanh in New York in 1965, which led to a collaboration and a new collection the following year. In April 1967, they were invited to show at the Pitti Palace in Florence. Rosita told the models to remove their bras, supposedly because they were the wrong color, and showed through the thin lamé blouses. The material became transparent under the lights and caused a sensation. The Missonis were not invited back the following year, but the business grew; a new factory in Sumirago was built in 1969. Missoni designs were championed in the USA by Diana Vreeland, editor of American Vogue, and a Missoni boutique was opened in Bloomingdales.
 Passage 2:The corps was formed as part of the 34th Army of the Northwestern Front on 15 July 1943 under the command of Major General Pavel Kuznetsov, who led it for the rest of the war. It initially existed as a headquarters without assigned troops, and transferred to the Reserve of the Supreme High Command in August with the 1st and 10th Guards Airborne Divisions. In September it was transferred to the 37th Army of the Steppe Front (the 2nd Ukrainian Front from 20 October), being reinforced by the 188th Rifle Division. The corps fought in the capture of Left-bank Ukraine east of Kremenchuk, then crossed the Dnieper and captured a bridgehead northwest of Mishurin Rog during the Battle of the Dnieper. Between October and December it attacked towards Krivoi Rog. The 1st Guards Airborne was replaced by the 89th Guards Rifle Division in October, and the latter was replaced by the 28th Guards Rifle Division the following month. The 15th Guards Rifle Division replaced the 10th Guards Airborne in January 1944.
 Passage 3:Stay Alive was launched on November 22, 2011 at Patio Carlitos, White House, Quezon City. Nina sang three songs from the album including the lead single "Dance", which she performed with choreographed dance moves. She also performed the critically acclaimed ballad, "However Much Love", and her own composition, "You Should Know". On December 1, 2011, she promoted her album on Happy Yipee Yehey! after performing the song live, where she also did a duet with the show's host Randy Santiago. On December 11, 2011, she launched the album in Party Pilipinas, the rival program of variety show ASAP which she became part of. She performed "Dance" with Frencheska Farr and Julie Anne San Jose. She also guested in Joe D' Mango's midnight radio show on DZMM entitled LoveNotes, where she sang a few songs from the album including "Hagkan", "Laging Ikaw" and "However Much Love". Also, the music video for "Dance" had its nationwide premiere during the show. The episode aired on December 13, 2011. On New Year's Eve 2012, the song was played inside Big Brother's house on . On January 29, 2012, Stay Alive Mall Tour had its first leg at Market! Market! Taguig, where Nina performed most of the album songs with intensive choreography including "Dance", "Staying Alive" and "Only with You". On February 5, 2012, she promoted the album at SM City Baguio as part of the mall tour, where she performed "Dance" and other Stay Alive songs. She also sang her number-one hits "Love Moves in Mysterious Ways" and "Someday".

A:
2