Detailed Instructions: 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.
See one example below:
Problem: 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
Explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Problem: Question: What is the birth year of the Field Marshal who provided Manstein with massive air support? Passage 1:Elem was born in Itta Bena, Mississippi, United States. He studied both Robert Nighthawk and Ike Turner playing live, which inspired his own early rhythm guitar playing. By 1948, Elem had relocated to Chicago, Illinois, where he spent the rest of his life. Shortly after arriving, Elem picked up employment backing Arthur "Big Boy" Spires and then Lester Davenport. To avoid being in a large batch of jobbing rhythm guitarists all seeking work, Elem moved over to playing the electric bass guitar. In 1956, this instrument was something of a rarity in Chicago, and Elem formed a band with the harmonica player Earl Payton, and a young Freddie King on lead guitar. The same year, King recorded his debut single for El-Bee Records. The A-side was "Country Boy", a duet with Margaret Whitfield. The B-side, "That's What You Think", was a King vocal. Both tracks featured the guitar of Robert Lockwood Jr., and the bass playing of Elem. That relative success saw King installed as the bandleader, but Elem stayed mostly with King for the next eight years. During the 1950s and 1960s, Elem regularly appeared in Chicago's burgeoning club environment, mainly on the West Side. He variously backed Magic Sam, Junior Wells, Shakey Jake Harris, Jimmy Dawkins, and Luther Allison, in addition to having a brief spell in Otis Rush's backing band.
 Passage 2:Mainly due to Diego Milito's 23 goals in 2006–07 (he finished third to Roma's Francesco Totti and Real Madrid's Ruud van Nistelrooy – 26 and 25 goals, respectively – in the European Golden Shoe race), Real Zaragoza finished in sixth position, thus qualifying to the UEFA Cup. However, the following season ended in relegation – for the second time in the decade – with the side also being eliminated in the first round in European competition. Legendary club coach Víctor Fernández returned for a second spell, although he was sacked in January 2008, as the club had four managers during the campaign. On the last matchday, a brace from Ricardo Oliveira proved insufficient in a 2–3 away loss against Mallorca, with the team totalling 42 points to Osasuna's 43.
 Passage 3:As the German Sixth Army was encircled in Stalingrad, the Red Army undertook a series of wider attacks against the rest of Army Group South. These culminated on 2 January 1943 when the Red Army launched Operation Star and Operation Gallop, which between January and early February broke German defenses and led to the Soviet recapture of Kharkov, Belgorod, Kursk, as well as Voroshilovgrad and Izium. The Soviet victories caused participating Soviet units to over-extend themselves, though this was largely due to Manstein's strategy of controlled retreat towards the Dneiper. Freed on 2 February by the surrender of the German Sixth Army, the Red Army's Central Front turned its attention west and on 25 February expanded its offensive against both Army Group South and Army Group Center. Months of continuous operations had taken a heavy toll on the Soviet forces and some divisions were reduced to 1,000–2,000 combat effective soldiers. On 19 February, Field Marshal Erich von Manstein launched his Kharkov counterstrike, using the fresh II SS Panzer Corps and two panzer armies. Manstein benefited greatly from the massive air support of Field Marshal Wolfram von Richthofen's Luftflotte 4, whose 1,214 aircraft flew over 1,000 sorties per day from 20 February to 15 March to support the German Army, a level of airpower equal to that during the Case Blue strategic offensive a year earlier.

Solution:
3