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.
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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: Who produced the song that will.i.am claims that helped Obama win his election? Passage 1:Denson was born in Aliquippa, Pennsylvania, in 1975. A few years after his birth, his parents moved from Aliquippa to Baldwin, Pennsylvania, a suburb of Pittsburgh. He attended Baldwin High School where he played for the legendary WPIAL Hall of Fame coach Don Yannessa. Denson became only the second player in Baldwin High School history to start on the varsity football team as a true freshman. While playing in the highly competitive WPIAL, Denson had to face the likes of future NFL Hall of Fame player Jason_Taylor_(American_football) and future Super Bowl Champion Mike_Logan_(American_football) who would eventually become his 1997 Draft classmates. In his junior year, the Fighting Highlanders beat North Hills High School to win their first playoff game in over three decades. During his senior year, Denson was selected as a USA Today High School All-American and chosen to play in the prestigious Big 33 Pennsylvania Football High School All Star Game playing alongside Jon Ritchie and Ron Powlus.
 Passage 2:Described by will.i.am as "party album[s]", The Black Eyed Peas released the electronic dance-influenced The E.N.D. and The Beginning in 2009 and 2010, following the 2008 election of Barack Obama as President of the United States. The band welcomed Obama's election; will.i.am had recorded and released "Yes We Can", a single that promoted Obama's election campaign during the Democratic Party primaries, and often claims the song had helped Obama get elected. The band's most commercially successful single during this period, "I Gotta Feeling", was inspired by the band's perception of being "in the center of a ginormous change in America". The track became the best-selling digital song of all time until it was surpassed by Pharrell Williams' "Happy" in 2014. By the end of 2010, The E.N.D. had sold over eleven million copies worldwide, while The Beginning had sold over two million copies worldwide. The band had intended to return to the studio to create their seventh studio album soon after the release of The Beginning, though frequent delays and Taboo's diagnosis with testicular cancer in 2014, along with his subsequent treatment and recovery, led to the project being put on hiatus.
 Passage 3:Holm was born in Falköping, Sweden, the son of station master Carl Holm and his wife Olga (née Södergren). He passed studentexamen in Skövde in 1937 and then served in the Swedish Volunteer Corps during the Winter War in Finland from 1939 to 1940. Holm was commissioned as an officer in the Swedish Army Service Troops in 1941 with the rank of fänrik in the Norrland Train Corps (Norrlands trängkår, T 3) in Sollefteå. Holm attended the Royal Swedish Army Staff College from 1949 to 1951 and the British Army Staff College in England in 1954. He was appointed captain in the General Staff Corps in 1955 and he served in the expert investigation regarding compulsory military service from 1956 to 1958. Holm served as captain in the Älvsborg Regiment (I 15) in 1958 and he was appointed major in the General Staff Corps in 1959. The same year he attended the Swedish National Defence College. Holm was a member of the 1960 Social Emergency Committee (Socialberedskapskommittéen) and he served as head of department in the Defence Staff from 1960. He was then promoted to lieutenant colonel in 1963 and served in the Life Regiment Grenadiers (I 3) before being appointed colonel in the Defence Staff in 1964. In 1965, Holm was appointed regimental commander of Norrbotten Regiment (I 19) in Boden and the year after he served as chief of staff of the Bergslagen Military Area (Milo B).

Solution:
2