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: 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 solution: 1
Example explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Problem: Question: How old was Greek George when the camels were finally auctioned off? Passage 1:Ali was one of several men hired by the United States Army to introduce camels as beasts of burden to transport cargo across the "Great American Desert." Eight of the men – including Ali – were of Greek origin. They arrived at the Port of Indianola in Calhoun County, Texas on the . The book Go West Greek George by Steven Dean Pastis, published in both Greek and English, specifically identifies all eight men. These pioneers were Yiorgos Caralambo (later known as Greek George), Hadji Ali (Hi Jolly, a.k.a. Philip Tedro), Mimico Teodora (Mico), Hadjiatis Yannaco (Long Tom), Anastasio Coralli (Short Tom), Michelo Georgios, Yanni Iliato, and Giorgios Costi. The Americans acquired three camels in Tunis, nine in Egypt and 21 in Smyrna: 33 in all. Ali was the lead camel driver during the US Army's experiment with the U.S. Camel Corps in using camels in the dry deserts of the Southwest. After successfully traveling round trip from Texas to California, the experiment failed, partly due to the problem that the Army's burros, horses, and mules feared the large animals, often panicking, and the tensions of the American Civil War led to Congress not approving more funds for the Corps. In 1864, the camels were finally auctioned off in Benicia, California, and Camp Verde, Texas. Ali was discharged from the Quartermaster Department of the U.S. Army at Fort McDowell in 1870.
 Passage 2:In 2009 the Taliban began moving even more men into Nawa, possibly for additional attacks against Lashkar Gah. On May 13, they launched an attack against the Afghan National Police in the district, that overwhelmed several posts. By late spring they had established a solid foothold in the district. On July 2, 2009, Marines from the 1st Battalion, 5th Marines (1/5) occupied the district as part of Operation Strike of the Sword. They set up their headquarters in Forward Operating Base Geronimo. On August 26, Lance Corporal Donald Hogan, a Marine with 1/5, threw himself in front of an improvised explosive device (IED), saving the Marines in his squad. He was later posthumously awarded the Navy Cross for his actions. In December, 1/5 was replaced by 1st Battalion, 3rd Marines. In the late summer and early fall the Marines detained Haji Adam, one of Nawa's main drug lords, and turned his house into Combat Outpost (COP) Sullivan. In November two local officials were assassinated. On December 17, Admiral Mike Mullen, the Chairman of the Joint Chiefs of Staff, visited Patrol Base Jaker and touted the security gains by touring the Nawa district center without wearing body armor. Several weeks later Afghan President Hamid Karzai and ISAF commander General Stanley McChrystal also visited Nawa on January 2, 2010. On January 9 British journalist Rupert Hamer and two Marines were killed by an IED in the district.
 Passage 3:The Birth of a Nation is written, produced, and directed by Nate Parker, who also stars as Nat Turner. Parker wrote the screenplay, which was based on a story he co-wrote with Jean McGianni Celestin. Parker learned about Turner from an African-American studies course at the University of Oklahoma. He began writing the screenplay for a Nat Turner film in 2009 and had a fellowship at a lab under the Sundance Institute. While he got writing feedback from filmmakers like James Mangold, he was told that a Nat Turner film could not be produced. The Hollywood Reporter said:But what he heard instead were all the reasons a movie about Nat Turner wouldn't work: Movies with black leads don't play internationally; a period film with big fight scenes would be too expensive; it was too violent; it wouldn't work without a big box-office star leading it; Turner was too controversial—after all, he was responsible for the deaths of dozens of well-off white landowners.After Parker finished his acting role in Beyond the Lights in late 2013, he told his agents he would not continue acting until he had played Nat Turner in a film. He invested $100,000 of his money to hire a production designer and to pay for location scouting in Savannah, Georgia. He met with multiple financiers, and the first to invest in the film were retired basketball player Michael Finley (who had previously invested in the film The Butler) and active basketball player Tony Parker (no relation). Parker eventually brought together 11 groups of investors to finance 60% of the production budget, and producer Aaron L. Gilbert of Bron Studios joined to cover the remaining financing.
Solution: 1