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

Now, solve this: Question: What is the elevation of the land formation near where Khaplang was born? Passage 1:Khaplang was born in Waktham in April 1940, a village east of Myanmar's Pangsau Pass as the youngest of ten children. Born into Hemi Naga tribe that lived predominantly in Myanmar, his early childhood was shaped by the opening up of isolated Naga communities by the World War II. During the War, the Western Allies built the long Stilwell Road connecting Ledo in India's Assam to China's Kunming to carry supplies against the Japanese Army, that passed through Waktham. This was said to have "sowed the seeds of insurgency in Khaplang." Khaplang claimed that he first attended a school in Margherita, a town in Assam before joining Baptist Mission School in Myitkyina in Myanmar's Kachin State in 1959, and in 1961 to another missionary school in Kalay before he eventually dropped out.
 Passage 2:He worked on various small projects until he found new fame for his role as the American photojournalist in Apocalypse Now (1979). He went on to helm his third directorial work Out of the Blue (1980), for which he was again honored at Cannes, and appeared in Rumble Fish (1983) and The Osterman Weekend (1983). He saw a career resurgence in 1986 when he was widely acclaimed for his performances in Blue Velvet and Hoosiers, the latter of which saw him nominated for the Academy Award for Best Supporting Actor. His fourth directorial outing came about through Colors (1988), followed by an Emmy-nominated lead performance in Paris Trout (1991). Hopper found greater fame for portraying the villains of the films Super Mario Bros. (1993), Speed (1994) and Waterworld (1995).
 Passage 3:Shirō Sagisu composed most of the music for Neon Genesis Evangelion and for the original TV show's three OST albums. He received the 1997 Kobe Animation award for "Best Music Score". King Records and their label Starchild (specializing in music, animation and film) distributed most of the albums, singles and box sets. For the anime series, Yoko Takahashi performed the song "A Cruel Angel's Thesis" which was used as the opening theme song for the series. The song "Fly Me to the Moon" originally by Bart Howard was performed by various voice actors from the anime series and these versions of the song were used as the ending theme song for the series. Theme songs were also granted for the films in the franchise , its follow-up The End of Evangelion and three installments of the Rebuild of Evangelion film series.

Solution:
1