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: What is the age difference between the father and son who may have built Hauenštejn castle? Passage 1:In 1979 he moved to the Brabham team where he worked with the Brazilian driver Nelson Piquet and in 1981 moved to the German ATS team. Having decided not to set up his own team he then left motor racing to set up a self storage business. He has also competed in classic car rallies in cars including the Porsche 912 and won the Liège-Brescia-Liège rally for cars up to 700cc in a BMW 700. He was a technical advisor on the 2013 film Rush about the rivalry between the drivers James Hunt and Niki Lauda during the 1976 Formula One motor-racing season. In the film he was portrayed by Stephen Mangan and he also had a cameo role on screen as a race official.
 Passage 2:The castle was built in the 13th century by Přemysl Otakar II or his son Václav II to guard royal paths and local mines. The first known owner was Mikuláš Winkler, burgrave of Loket Castle, who sold Hauenštejn to the monastery in Doksany. The monastery exchanged it for another building with King John of Luxemburg. His son Charles IV enlarged the castle‘s domain. The castle frequently changed its keepers in the second half of the 14th century and the 15th century but it more or less remained royal property. The rich family of Šlik that started silver mining near Jáchymov won the castle in the 16th century. The Šliks rebuilt the castle in the Renaissance style after a fire in 1600. In 1663 the Šliks sold the castle to the Saxe-Lauenburg ducal family and it became part of the Ostrov domain. The castle was in the hands of the Baden family from 1689. When the last male member of the family died in 1771, the property of the Badens in Bohemia was inherited by the royal family of Maria Theresa. The Habsburgs sold it to the Buquoy family in 1837. Countess Gabrielle Buquoy started to rebuild the castle in a Romantic style. Ferdinand Buquoy continued the reconstruction under the influence of historism, taking its examples from England (Windsor, Arundel, Belvoir, Lancaster or Oxford) and Bavaria (Hohenswangau, Lahneck). 
 Passage 3:The 2010–11 offseason has been notable for the Orioles, featuring a complete makeover of their infield, with only Brian Roberts expected to reprise his starting role. On December 6, 2010, the Orioles completed a trade with the Arizona Diamondbacks for third basemen Mark Reynolds, in exchange for relief pitchers David Hernandez and Kam Mickolio. The next day, the Orioles lost corner infielder, second baseman (40 games in 2010), and lone 2010 All-Star representative Ty Wigginton when he signed with the Colorado Rockies. On December 9, however, a deal was struck with the Minnesota Twins, acquiring shortstop J. J. Hardy, utility infielder Brendan Harris and cash in exchange for minor league pitchers Jim Hoey and Brett Jacobson. The following day, the Orioles re-signed former starting shortstop César Izturis, though now as a utility middle infielder. Finally, after weeks of rumor and speculation, concerning possible first base signings, the Orioles inked veteran free agent Derrek Lee on January 6, 2011.

Student:
2