In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

[EX Q]: Question: How old was the person whom Stevens supported for president when he died? Passage:Stevens was a firm supporter of former brigadier general Franklin Pierce's candidacy for President of the United States in 1852, as both men had served in the Mexican–American War. Stevens was rewarded by President Pierce on March 17, 1853 by being named governor of the newly created Washington Territory. (The position also included the title of Superintendent of Indian Affairs for that region). Stevens chose to add one more duty as he traveled west to the territory he would govern: the government was calling for a surveyor to map an appropriate railroad route across the northern United States, hoping that a transatlantic railroad would open up Asian markets. With Stevens' engineering experience (and likely the favor of Pierce yet again, as well as Secretary of War Jefferson Davis), he won the bid. His party, which included Dr. George Suckley, John Mullan and Fred Burr, son of David H. Burr, spent most of 1853 moving slowly across the prairie, surveying the way to Washington Territory. There Stevens met George McClellan's party, which had surveyed the line between the Puget Sound and the Spokane River. He took up his post at Olympia as governor in November that year.

[EX A]: Stevens was a firm supporter of former brigadier general Franklin Pierce's candidacy for President of the United States in 1852, as both men had served in the Mexican–American War

[EX Q]: Question: Which of the decidousous plants that border Igelbäcken is the most abundant in the world?  Passage:The upper part of the watershed is constituted of Norra Järvafältet, 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 (Akallavägen) and the Barkarby Airport before merging with the stream Djupanbäcken. 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 4 km in the valley separating the suburbs Akalla-Hjulsta and Tensta-Rinkeby and where are several rural structures including an ecological farm (Hästa Gård), eight allotment-gardens, and some minor overgrown wetlands. East of the valley the river is crossed by a second traffic route (Kymlingelänken) before flowing 2,5 km 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 1.4 km passes more allotment-gardens and the gardens of the Ulriksdal Palace before jumping into Edsviken through a low dam.

[EX A]: 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

[EX Q]: Question: When was the team founded that moved to Winnipeg in 2011? Passage:Much as was the case of the concurrent development of professional gridiron football, the Pittsburgh, Pennsylvania metropolitan area was one of the first areas to promote a professional ice hockey team. The Western Pennsylvania Hockey League began hiring professional players in 1902 and acted as a pro–am league. This league joined with teams in Michigan and Ontario to form the International Professional Hockey League in 1904, with Houghton, Michigan dentist Jack Gibson its founder. While this league had folded by 1907, it was the start of professional hockey. The United States would continue to see professional hockey with teams from the PCHL, beginning with the Portland Rosebuds, followed by a Seattle-based franchise a year later. When the Boston Bruins joined the NHL in 1924, the United States was finally represented in the league. It would continue to grow in the NHL until a peak in the 2000s (decade), when 24 of the NHL's 30 teams were in the United States (the loss of the Atlanta Thrashers to Winnipeg in 2011 reduced this number to 23; it returned to 24 American teams when the Vegas Golden Knights joined in 2017). The NHL will reach a higher peak when the Seattle expansion franchise joins the league in 2021-22 as the 25th American team. There are several other pro leagues in the US as well; as of 2019 these include the AHL, ECHL, SPHL, and FPHL. The AHL and ECHL are official minor leagues to the NHL, with the ECHL subservient to the AHL; the FPHL and SPHL operate as low-level independents.

[EX A]:
It would continue to grow in the NHL until a peak in the 2000s (decade), when 24 of the NHL's 30 teams were in the United States (the loss of the Atlanta Thrashers to Winnipeg in 2011 reduced this number to 23; it returned to 24 American teams when the Vegas Golden Knights joined in 2017)