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: How old was Bob Dylan the year George Harrison was in Los Angeles? Passage 1:In early April 1988, George Harrison was in Los Angeles and needed to record a B-side for a European 12-inch single. Jeff Lynne was also in Los Angeles writing and producing some tracks for Roy Orbison on his album Mystery Girl (released posthumously), as well as Tom Petty’s first solo album, Full Moon Fever. While having dinner with Lynne and Orbison, Harrison related how he needed to record a new track and wanted to do it the next day. Harrison asked if Lynne would help, and Orbison offered his old friend his hand as well, seeing how fun it would be. Needing a studio at short notice, Harrison called Bob Dylan, who agreed to let them use his garage studio. After dinner, Harrison stopped by Petty’s house to pick up a guitar he had left there, and invited Petty along too. Gathering at Dylan’s Malibu home the following day, Harrison, Lynne, Orbison and Petty worked on a song that Harrison had started writing for the occasion, "Handle with Care". At first, Dylan's role was that of a host, maintaining a barbecue to feed the musicians; at Harrison's invitation, Dylan then joined them in writing lyrics for the song. The ensemble taped the track on Dylan's Ampex recording equipment, with all five sharing the vocals.
 Passage 2:At the start of the 1922 season, Kopf was a member of the Giants second team, which was compiled of players who were cut from New York's spring training roster and assigned to a team that played minor league teams in Texas. After his trial with the Giants second team, he was assigned to the Double-A Newark Bears of the International League. After a week with the Bears, Kopf was turned back to the Giants and manager John McGraw gave him an unconditional release. Later that year, he signed with the Brooklyn Dodgers. The Dodgers assigned Kopf to the Double-A Oakland Oaks of the Pacific Coast League. With the Oaks, he batted .246 with 16 hits, and five doubles in 20 games played. Brooklyn then assigned him to Newark Bears. Finally, the Dodgers sold Kopf to the Double-A Reading Aces of the International League. His combined totals in the International League that season was a batting average of .228 with 18 hits, three doubles, and two home runs in 23 games played.
 Passage 3:He was an ensemble member of Theater Basel from 1955 to 1957. He was then a member of the Städtische Bühnen Oberhausen (1958–1959), Stadttheater Gießen (1959–1960), Opernhaus Kiel (1960–1962) and the Staatstheater Kassel (1962–1965). In Kassel, he appeared as Ceccho in the world premiere of the complete version of Henze's König Hirsch on 10 March 1963, and as the Father in Ján Cikker's Abend, Nacht und Morgen on 5 October 1963. He sang at the Opernhaus Dortmund from 1965 to 1968, where he appeared as Valzacchi in Der Rosenkavalier by Richard Strauss in the opening performance of the new opera house on 3 March 1966. Other roles there included the Narrator in Orff's Der Mond, Goro in Puccini's Madama Butterfly, the Knusperhexe in Humperdinck's Hänsel und Gretel, Wenzel in Smetana's Die verkaufte Braut and Wolfgang Capito in Hindemith's Mathis der Maler. He took part in the premiere of Eli by Walter Steffens in 1967.

Solution:
1