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: What year did Caesar implement his calendar reform? Passage 1:Woodhouse began his football career at York City's centre of excellence in 1994, before being transferred to Sheffield United for an initial compensation fee of £2,200. Sheffield United and York City later agreed on an additional £15,000 fee plus a five-percentage sell-on clause. He made his debut for Sheffield United at the age of 17, coming on as a 79th-minute substitute in a 1–0 home win against Crewe Alexandra in the First Division on 29 November 1997. He made a total of nine First Division appearances in the 1997–98 season. Woodhouse holds the record for being the club's youngest ever captain, aged 19. He earned a call-up to the England under-21 team, and made his debut in a 2–2 away draw against Hungary on 27 April 1999. He went on to earn another three caps against Sweden, Bulgaria and Poland in England's 2000 European Under-21 Championship qualifying group. He made a total of 104 appearances in the Football League, scoring six goals, before being sold to Birmingham City for £1 million in February 2001.
 Passage 2:For superstitious reasons, when the Romans began to intercalate to bring their calendar into line with the solar year, they chose not to place their extra month of Mercedonius after February but within it. February 24—known in the Roman calendar as "the sixth day before the Kalends of March"—was replaced by the first day of this month since it followed Terminalia, the festival of the Roman god of boundaries. After the end of Mercedonius, the rest of the days of February were observed and the new year began with the first day of March. The overlaid religious festivals of February were so complicated that Julius Caesar opted not to change it at all during his 46 calendar reform. The extra day of his system's leap years were located in the same place as the old intercalary month but he opted to ignore it as a date. Instead, the sixth day before the Kalends of March was simply said to last for 48 hours and all the other days continued to bear their original names. (The Roman practice of inclusive counting initially caused the priests in charge of the calendar to add the extra hours every three years instead of every four and Augustus was obliged to omit them for a span of decades until the system was back to where it should have been.) When the extra hours finally began to be reckoned as two separate days instead of a doubled sixth ("bissextile") one, the leap day was still taken to be the one following hard on the February 23 Terminalia. Although February 29 has been popularly understood as the leap day of leap years since the beginning of sequential reckoning of the days of months in the late Middle Ages, in Britain and most other countries, no formal replacement of February 24 as the leap day of the Julian and Gregorian calendars has occurred. The exceptions include Sweden and Finland, who enacted legislation to move the day to February 29. This custom still has some effect around the world, for example with respect to name days in Hungary.
 Passage 3:About the songs to be included on the album, De Vita revealed that his idea was to include well-known songs that were more than three years old and refresh them with new arrangements. "The first challenge was to choose the songs, and the second to make that sound different... but not too much", De Vita said. Sixteen previous songs by the singer are included: "Un Buen Perdedor", from his debut album of 1984; and "Aquí Estás Otra Vez", from Fantasía (1986); "Louis" and "Te Amo", from Al Norte del Sur (1989); "No Basta", the lead single from Extranjero (1990); "Y Te Pienso" and "Cálido y Frío", from Voces a mi Alrededor (1993); "Si Quieres Decir Adios" and the title track from the 1993 album Fuera de Este Mundo; and "Si Tú No Estás" and "Te Veo Venir Soledad", selected from Nada es Igual (1999). The most represented album on the setlist is Stop (2005) with four songs: "Si La Ves", "Dónde Está el Amor", "No Me Lástimes", and "Tú de Qué Vas". "No Se Olvida" is the only song selected from the 2008 album Simplemente La Verdad. Two songs were previously unreleased. De Vita chose Mexican singer Alejandra Guzmán to record the lead single "Tan Sólo Tú", since he thought she was "perfect" for the song. "Mira Más Allá" is the other new song included. De Vita also stated his intention to record a sequel to Primera Fila; since many songs in his repertoire were left out, "I would like to include Shakira on a ballad... Ricky Martin was considered for this album too, but could not make it in time." Two years later, Vuelve en Primera Fila was announced to be the follow-up album which was released on November 12, 2013 in Latin America.

Solution:
2