Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: What year did construction begin on the dam that the river passes through before Afterbay Dam? Passage 1:The Bighorn River begins as the Wind River in the Rocky Mountains at Wind River Lake, near Two Ocean Mountain and the summit of Togwotee Pass. The Wind River flows southeast receiving the east fork of the Wind River from the north, and enters the Wind River Basin, flowing past Dubois and Johnstown, to Riverton, where it receives the Little Wind River. The river then changes direction to the northeast and then the north, flowing into Boysen Reservoir, which is formed by Boysen Dam. Below the dam it enters the Wind River Canyon, where the river narrows and forms many rapids. At the end of the canyon the Wind River widens out in an area called the Wedding of the Waters where it becomes the Bighorn River and enters the Bighorn Basin. The Bighorn continues northward, passing through Thermopolis, Worland, and Basin. At Greybull it receives the Greybull River, and about north of that confluence it enters Bighorn Lake, where it is joined by the Shoshone River. North of the confluence with the Shoshone, the reservoir narrows as the river enters the Bighorn Canyon, where it crosses into Montana. At the end of the canyon, the river passes through Yellowtail Dam and Afterbay Dam. The river turns to the northeast and enters the Great Plains. At Hardin the river is joined by the Little Bighorn River. Approximately downriver from the Little Bighorn, in Big Horn County, the Bighorn empties into the Yellowstone.
 Passage 2:Jorritsma was elected as a Member of the House of Representatives after the election of 1982, serving from 16 September 1982 until 3 June 1986. Jorritsma returned as a Member of the House of Representatives after Wim van Eekelen was appointed Minister of Defence in the Cabinet Lubbers II after the election of 1986, taking office on 30 July 1986 serving as a frontbencher and spokesperson for Spatial Planning. After the election of 1994 Jorritsma was appointed as Minister of Transport and Water Management in the Cabinet Kok I, taking office on 22 August 1994. After the election of 1998 Jorritsma returned as a Member of the House of Representatives, taking office on 19 May 1998. Following the cabinet formation of 1998 Jorritsma was appointment as Deputy Prime Minister and Minister of Economic Affairs in the Cabinet Kok II, taking office on 3 August 1998. The Cabinet Kok II resigned on 16 April 2002 following the conclusions of the NIOD report into the Srebrenica massacre during the Bosnian War and continued to serve in a demissionary capacity. After the election of 2002 Jorritsma again returned as a Member of the House of Representatives, taking office on 23 May 2002. Following the cabinet formation of 2002 Jorritsma was not giving a cabinet post in the new cabinet, the Cabinet Kok II was replaced by the Cabinet Balkenende I on 22 July 2002 and he continued to serve in the House of Representatives as a frontbencher and spokesperson for Social Affairs and Employment. In October 2002 Jorritsma announced that she wouldn't stand for the election of 2003 and continued to serve until the end of the parliamentary term on 30 January 2003.
 Passage 3:The 2009 Pacific Nations Cup is a rugby union tournament held between five national sides on the Pacific Rim: Fiji, Japan, Samoa, Tonga and the Junior All Blacks. The New Zealand Māori team that won the tournament last year will no longer take part in this competition because of a decision taken by the New Zealand Rugby Union. Australia A has also decided to pull out due to a similar decision. The inaugural competition was held in 2006. This year the tournament will begin on June 12 and ends on July 3, 2009 and most of the matches will be hosted by Fiji. The awarding of the key international tournament to the Fiji Rugby Union represents a further boost to the continued development of rugby in the region. The two opening round matches will be played outside of Fiji with Samoa hosting the Junior All Blacks in Apia and Tonga entertaining the Fijians in Nukuʻalofa the following day before the tournament moves to Fiji for a 17-day festival of international rugby spread across three match venues: the ANZ National Stadium (Suva), Churchill Park (Lautoka) and Lawaqa Park (Sigatoka).

Student:
1