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: How long did Spaulding coach for UCLA? Passage 1:The upper part of the watershed is constituted of Norra Jarvafaltet, an open-air area characterized by moraine ridges covered with forests separated by water meadows and tilled fields. While some 20 hectares of the surrounding area is used for pasture, the stream is bordered by deciduous plants such as Alder and Birch and Bulrush can be found in non-shadowed patches. Some 2,5 kilometres from its origin, the stream passes down in a culvert under a traffic route (Akallavagen) and the Barkarby Airport before merging with the stream Djupanbacken. This part of the catchment area contains a motocross track, a golf driving range, a closed dump, and receives stormwater from the E18 traffic route. Thereafter, the stream flows some 4km in the valley separating the suburbs Akalla-Hjulsta and Tensta-Rinkeby and where are several rural structures including an ecological farm (Hasta Gard), eight allotment-gardens, and some minor overgrown wetlands. East of the valley the river is crossed by a second traffic route (Kymlingelanken) before flowing 2,5km through an open grassland to reach a railway and the E4 traffic route, water from the latter treated in a local cleaning plant. The last 1.4km passes more allotment-gardens and the gardens of the Ulriksdal Palace before jumping into Edsviken through a low dam.
Passage 2:The Burmese Way to Socialism (; also known as the Burmese Road to Socialism) refers to the ideology of the socialist government in Burma, from 1962 to 1988, when the 1962 coup d'etat was led by Ne Win and the military to remove U Nu from power. More specifically, the Burmese Way to Socialism is an economic treatise written in April 1962 by the Revolutionary Council, shortly after the coup, as a blueprint for economic development, reducing foreign influence in Burma and increasing the role of the military. The military coup led by Ne Win and the Revolutionary Council in 1962 was done under the pretext of economic, religious and political crises in the country, particularly the issue of federalism and the right of Burmese states to secede from the Union.
Passage 3:The 1938 UCLA Bruins football team represented the University of California, Los Angeles (UCLA) in the 1938 college football season. Coached by William H. Spaulding, the Bruins finished the season with a 741 record and made their first postseason appearance in a bowl game. The Pineapple Bowl featured the Bruins playing the on January 2, 1939, in Honolulu. The Bruins season offense scored 217 points while the defense allowed 106 points. George Pfeiffer and Hal Hirshon served as Co-Captains of the team. Center John Ryland was selected to the PCC First-Team All Coast and drafted by the Cleveland Rams of the National Football League (NFL) in 1939. The team also featured future Baseball Hall of Famer Jackie Robinson, Hollywood actor Woody Strode, Football Hall of Famer Kenny Washington. and Bill Overlin.

Output:
3