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.
.
Solution: 1
Why? The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input: Question: What was the population of Athens the year that Xenakis moved there? Passage 1:After college, Cranston began his acting career in local and regional theaters, getting his start at the Granada Theater in the San Fernando Valley. He had previously performed as a youth, but his show business parents had mixed feelings about their son being involved in the profession, so he did not continue until years later. Cranston was ordained as a minister by the Universal Life Church, and performed weddings for $150 a service to help with his income. He also worked as a waiter, night-shift security guard at the gates of a private LA community, truck loader, camera operator for a video dating service, and CCTV security guard at a supermarket. He started working regularly in the late 1980s, mostly doing minor roles and advertisements. He was an original cast member of the ABC soap opera Loving, where he played Douglas Donovan from 1983 to 1985. Cranston starred in the short-lived series Raising Miranda in 1988. Cranston's voice acting includes English dubbing of Japanese anime (for which he primarily used the non-union pseudonym Lee Stone), including Macross Plus and Armitage III: Poly-Matrix, and most notably,  as Fei-Long, and the children's series Mighty Morphin Power Rangers. Cranston did voice work for the 1993-94 first season of that series, playing characters such as Twin Man and Snizzard, for which he was paid about $50 an hour for two or three hours of daily work. The Blue Power Ranger, Billy Cranston, was named for him.
 Passage 2:Born in Dokkum, Netherlands, Pijper first rode a motorbike at the age of five. He was a successful long track rider before starting his speedway career. He made his debut in British speedway in 2002 with Edinburgh Monarchs, staying with the team until 2007 in a spell that included a Premier League title in 2003. In 2004 he won the European Grasstrack Championship at Eenrum. In 2007 he moved up to the Elite League with Wolverhampton Wolves, but after losing his place in the team returned to the Monarchs for a short spell, later moving to Berwick Bandits. He lost his team place once again, but later that season won the European Grasstrack Championship for a second time. He joined Elite League team Swindon Robins in 2008, but lost his place in June, going on to a spell with Mildenhall Fen Tigers in the Premier League. He returned to British speedway in 2011 with Glasgow Tigers, with whom he won the Premier League in both 2011 and 2012, and also signed with Elite League Birmingham Brummies as their number eight. In 2012 he returned to the Edinburgh Monarchs team, and was part of the 2013 Premier League Four-Team Championship winning team. In 2018 he signed to ride for the Redcar Bears 
 Passage 3:In 1938, after graduating from the Spetses school, Xenakis moved to Athens to prepare for entrance exams at the National Technical University of Athens. Although he intended to study architecture and engineering, he also took lessons in harmony and counterpoint with Aristotelis Koundouroff. In 1940 he successfully passed the exams, but his studies were cut short by the Greco-Italian War, which began with the Italian invasion on 28 October 1940. Although Greece eventually won the war, it was not long before the German army joined the Italians in the Battle of Greece, in April 1941. This led to the Axis occupation of Greece during World War II, which lasted until late 1944, when the Allies began their drive across Europe, forcing the Axis forces to withdraw. Xenakis joined the National Liberation Front early during the war, participating in mass protests and demonstrations, and later becoming part of armed resistance—this last step was a painful experience Xenakis refused to discuss until much later in life. After the Axis forces left, Churchill ordered that British forces step in to help restore the Greek monarchy; they were opposed by the Democratic Army of Greece, and the country plunged into a civil war. In December 1944, during the period of Churchill's martial law, Xenakis (who was by then a member of the communist students' company of the left-wing Lord Byron faction of ELAS) became involved in street fighting against British tanks. He was wounded and facially disfigured when shrapnel from a tank blast hit his cheek and left eye, which was blinded; that Xenakis survived the injury has been described as a miracle.

Solution:
3