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-Lo 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 (18941973) 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
Why? The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input: Question: How many plays did MacQueen-Pope's former employer, who MacQueen-Pope was a private secretary for, write? Passage 1:On July 10, 1961, Shehan returned to Baltimore as its Coadjutor Archbishop (with right of succession) and Titular Archbishop of Nicopolis ad Nestum. He succeeded Francis Patrick Keough as Archbishop of Baltimore on December 8 of that same year. In this position, he led the nation's first diocese and held precedence, except for Cardinals created earlier and without the honorary title of primacy, over the Church in America. After the Supreme Court ruled to remove prayer from public schools in 1962, Shehan warned that "secularization threatens to become a sort of state religion established by court decree". He was also a strong advocate of civil rights, banning segregation in all of Baltimore's Catholic institutions and walking in the March on Washington for Jobs and Freedom in 1963. He also maintained relations with Judaism and Eastern Orthodoxy. Cardinal Shehan worked with his friend Harry Lee Doll, Episcopal Bishop of Maryland and President of the Maryland Council of Churches on both civil rights and ecumenical issues. Along with the President of St. Mary's Seminary and University, Cardinal Shehan and Bishop Doll in 1968 founded Baltimore's Ecumenical Institute, in the city's Roland Park neighborhood.
Passage 2:Antoni Chrusciel was born on 16 July 1895 in the village of Gniewczyna ancucka halfway between ancut and Przeworsk, to Andrzej Chrusciel, a local farmer and the vogt of that village. In 1909, while still a student at a local gymnasium in Jarosaw, Chrusciel joined the secret scouting troop; he was also active in the Zarzewie movement. In 1914, after the outbreak of the First World War he moved to Lwow, where he joined the Eastern Legion. Soon afterwards, as a citizen of Austria-Hungary, he was drafted into the Austro-Hungarian Army. After graduating from an NCO school in May 1915 he served at various posts, including his service as a commanding officer of a company of the 90th Infantry Regiment. After the dissolution of Austria-Hungary and the chaos at the eastern front, Chrusciel's regiment was the only unit in the entire Austro-Hungarian Army to return to the barracks as an organized entity and with arms. Few weeks later Chrusciel, together with most of his unit, joined the newly formed Polish Army.
Passage 3:MacQueen-Pope, always known by his initials or, familiarly, as "Popie", was the eldest son of Walter George Pope and Frederica MacQueen. He was educated privately and at Tollington School. He first worked in a shipping office but became connected with the theatre as private secretary to George Dance, the playwright, manager and theatrical philanthropist. He tried his hand as a playwright, with limited success: The Times was dismissive of his short play, The Punctual Sex, in 1919. Sir Alfred Butt appointed him business manager at the Queen's Theatre, and after holding similar posts at other West End theatres, and holding the post of manager and secretary of Alexandra Palace from 1922 to 1925, he was appointed general manager of the Duke of York's Theatre in 1927, and was put in charge of the new Whitehall Theatre before it opened in 1930. The Times said of his career, "it was as press representative at the Palladium in 1925 that he began to develop his special talent for passing on to others ... his love and knowledge of the theatre generally and in particular of Drury Lane, of the Haymarket (Theatre of Perfection) and of the Gaiety (Theatre of Enchantment)."

Solution:
3