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.

Let me give you an 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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The answer to this example can be: 1
Here is why: The question refers to the 704th unit and task about war which is decribed by Passage 1.

OK. solve this:
Question: Were the Bosporans enslaved by the Romans? Passage 1:According to the Georgian chronicles, Nana was "from a Greek territory, from Pontus, the daughter of Oligotos" whom Mirian married after his first wife died (in 292 according to Cyril Toumanoff). Nana bore Mirian two sons: Rev II, Varaz-Bakur and a daughter who married Peroz, the first Mihranid dynast of Gugark. Pontus here may refer to the Bosporan Kingdom, then a client state of the Roman Empire. Toumanoff has assumed that the name of Nana's father might have been a Georgian corruption of "Olympius" or "Olympus", a Bosporan dynast whose son Aurelius Valerius Sogus Olympianus, a Roman governor of Theodosia, is known from a Greek inscription of 306 dedicated to "the Most High God" on the occasion of the building of the Jewish "prayer house". Alternatively, Christian Settipani identifies Nana as a younger daughter of Theothorses, a Bosporan king.
 Passage 2:La Hire joined Charles VII in 1418, when the English army invaded France. Although not a noble, La Hire was regarded a very capable military leader as well as an accomplished rider. Three years later, in 1421 he fought at the Battle of Baugé. Along with Jean de Dunois, La Hire was involved in scouting and skirmishing in the countryside as far north as Paris. In 1427, both La Hire and Dunois relieved the siege of Montargis. He was a close comrade of Joan of Arc. He was one of the few military leaders who believed in her and the inspiration she brought, and he fought alongside her at Orleans. At the Battle of Patay, La Hire commanded the vanguard and won a great victory for France. La Hire was also known for praying before going into battle, something that could be attributed to Joan's influence. In 1430, La Hire captured the English held fortification of Château Gaillard. He was imprisoned in Dourdan in the spring of 1431. He won the Battle of Gerberoy in 1435 and was made Captain General of Normandy in 1438. His last two major military engagements occurred in 1440 at Pontoise where he assisted Dunois to capture it from the English; and in 1442 he assisted Charles of Orleans in capturing La Réole. He died at Montauban on 11 January 1443, of an unknown illness.
 Passage 3:Jesmyn Ward (born April 1, 1977) is an American novelist and an associate professor of English at Tulane University. She won the 2011 National Book Award for Fiction for her second novel Salvage the Bones. She also received a 2012 Alex Award for the story about familial love and community covering the 10 days preceding Hurricane Katrina, the day of the cyclone, and the day after. Prior to her appointment at Tulane, Ward was an assistant professor of Creative Writing at the University of South Alabama. From 2008 to 2010, Ward had a Stegner Fellowship at Stanford University. She was the John and Renée Grisham Writer in Residence at the University of Mississippi for the 2010–2011 academic year. Ward joined the faculty at Tulane in the fall of 2014. In 2013, she released her memoir Men We Reaped. In 2017, she was the recipient of a MacArthur "genius grant" from the John D. and Catherine T. MacArthur Foundation. That same year, she received a second National Book Award for her third novel, Sing, Unburied, Sing", which made her the first woman to win two National Book Awards for Fiction. The novel also won an Anisfield-Wolf Book Award.

Answer:
1