Definition: 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.
Input: Question: In which country did Whittaker Chambers went to war as a U.S. Army Lieutenant? Passage 1:CalArts was originally formed in 1961, as a merger of the Chouinard Art Institute (founded 1921) and the Los Angeles Conservatory of Music (founded 1883). Both of the formerly existing institutions were going through financial difficulties around the same time, and the founder of the Art Institute, Nelbert Chouinard, was mortally ill. The professional relationship between Madame Chouinard and Walt Disney began in 1929 when Disney had no money and Madame Chouinard agreed to train Disney's first animators on a pay-later basis. It was through the vision of Disney, who discovered and trained many of his studio artists at Chouinard (including Mary Blair, Maurice Noble and some of the Nine Old Men, among others), that the merger of the two institutions was coordinated; the process continued after his death in 1966. Joining him were his brother Roy O. Disney, Lulu Von Hagen and Thornton Ladd (Ladd & Kelsey, Architects), of the Los Angeles Conservatory of Music. The original board of trustees at CalArts included Harrison Price, Royal Clark, Robert W. Corrigan, Roy E. Disney, Roy O. Disney, film producer Z. Wayne Griffin, H. R. Haldeman, Ralph Hetzel (then vice-president of Motion Picture Association of America), Chuck Jones, Ronald Miller, Millard Sheets, attorney Maynard Toll, attorney Luther Reese Marr, bank executive G. Robert Truex Jr., Jerry Wexler, Meredith Willson, Peter McBean and Scott Newhall (descendants of Henry Newhall); and the wives of Roswell Gilpatric, J. L. Hurschler, Richard R. Von Hagen.
Passage 2:Novak was registered Democrat, despite his conservative political views. He held more centrist views in his early career, and he supported the Democratic presidential candidacies of John F. Kennedy and Lyndon B. Johnson, of whom he was a friend. In later years, he said that he maintained his registered Democratic status so he could vote in District of Columbia Democratic primaries where victory would be tantamount to election. He was also close friends with Everett Dirksen. Novak later stated that reading Whittaker Chambers' book Witness changed his views from moderate-to-liberal to a strident anticommunism. Reading Chambers' message as a U.S. Army lieutenant in the Korean War gave him a feeling of moral absolutism in his cause. Novak's views turned further rightward through the 1970s, but Novak remained strongly critical toward Ronald Reagan and his supply side economics in the early 1980s. Novak changed his mind after debating economics with Reagan face to face, and he later wrote that Reagan was one of the very few politicians that he ever respected.
Passage 3:Perlmutter spent his childhood in the Mount Airy neighborhood of Philadelphia. He went to school in nearby Germantown; first Greene Street Friends School for the elementary grades, followed by Germantown Friends School for grades 7 through 12. He graduated with an AB in physics from Harvard magna cum laude in 1981 and received his PhD in physics from the University of California, Berkeley, in 1986. Perlmutter's PhD thesis titled "An Astrometric Search for a Stellar Companion to the Sun" described the development and use of an automated telescope to search for Nemesis candidates under Richard A. Muller. At the same time, he was using this telescope to search for Nemesis and supernovae, which would lead him to his award-winning work in cosmology. Perlmutter attributes the idea for an automated supernova search to Luis Alvarez, a 1968 Nobel laureate, who shared his idea with Perlmutter's research adviser.

Output:
2