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: Which of the universities that McGuffin  was awarded a Medical Research Council Fellowship at has the highest enrollment? Passage 1:He completed his training as a psychiatrist at the Maudsley Hospital, London and was awarded a Medical Research Council Fellowship to study genetics at the University of London and at Washington University in St Louis, Missouri where he spent a formative 18 months under the mentorship of Theodore (Ted) Reich and Irving I Gottesman. He completed a PhD with a thesis describing one of the first multi marker genetic linkage studies in schizophrenia. He subsequently became an MRC Senior Clinical Fellow at the Maudsley and the Institute of Psychiatry (now part of King's College London) and then took up the Chair of Psychological Medicine at the University of Wales College of Medicine in Cardiff in 1987. He subsequently established the Cardiff department as one of the World’s leading centres for psychiatric genetic research and was among the early pioneers of multi-centre international collaborations in psychiatric genetics such as the European Science Foundation programme on the Molecular Neurobiology of Mental Illness. He moved back to London as successor to Prof Sir Michael Rutter as Director of the MRC Social, Genetic and Developmental Psychiatry Centre at the Institute of Psychiatry in October 1998. From January 2007 to December 2009, he was the Dean of the Institute of Psychiatry. He was elected a founder Fellow of the Academy of Medical Sciences in 1998. Despite his very early Freudian leanings, McGuffin’s research, his books and papers have been mainly on the genetics of normal and abnormal behaviour.
 Passage 2:In 1997 Byker joined Apollo 440. His first contribution was to provide vocals for the song Ain't Talkin' 'bout Dub which peaked at number 7 in the UK Singles Chart. Following this, he and the band recorded their second album Electro Glide in Blue. Byker, Trevor Gray and Howard Gray wrote and produced Liverpool FC's FA Cup Final single Pass & Move (It's the Liverpool Groove) under the name Boot Room Boyz. It reached number 4 in the UK Singles Chart. In 1999 the band released Gettin' High on Your Own Supply. The album proved to be hit and went to number 20 in the UK Album Chart. The album spawned two UK Top 10 singles including the theme to the 1998 movie Lost In Space and Stop the Rock. In 1999 Byker appeared on Never Mind The Buzzcocks and featured as a player on FIFA 2000 with other Apollo 440 members Noko, Trevor Gray and Howard Gray.
 Passage 3:In 1995, Tony was selected to become a member of the NFL officiating staff as a back judge (the title was changed to field judge in 1998) before being promoted to referee at the beginning of the 1998 NFL season. In his three seasons as a back judge, he worked two playoff games including the 1997 NFC Championship Game. Tony also officiated in NFL Europe working the World Bowl in both 1995 (Back Judge) and 1998 (Referee). In 1998, he became a referee after Dale Hamer returned to the head linesman (now down judge) position and Gary Lane returned to the side judge position. Corrente worked the NFC Championship Game in 2001 between the Minnesota Vikings and New York Giants at Giants Stadium in East Rutherford, New Jersey and the 2010 AFC Championship Game between the New York Jets and the Indianapolis Colts at Lucas Oil Stadium in Indianapolis. Since joining the NFL in 1995, Corrente has been involved in 13 post-season assignments including 3 AFC/NFC Championships and as the alternate Referee in Super Bowls XL and 50 and as Referee in Super Bowl XLI between the Chicago Bears and the Indianapolis Colts.

Solution:
1