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.

Example Input: Question: Do more than 1,000 people live in either town that made up the final sled dog mail route? Passage:Charlie Biederman (November 11, 1918February 22, 1995) was a musher in Alaska best known for being the last surviving dog sled mail carrier in the United States. Charlie was born in Alaska as the son of Ed Biederman, a musher born in Bohemia who immigrated to the United States in 1874 and also delivered the mail via dog sled. The date of Charlie's birth is unclear, but contemporary U.S. Censuses indicate it likely was around 1919. Charlie had four siblings. Charlie was raised in Eagle, Alaska, but lived in an isolated cabin on the Yukon River for most of his life. From an early age, he assisted his father and brother in their winter deliveries of the mail to isolated cabins in central Alaska. In winter, the family lived in Eagle and ran the mail route between that town and Circle, another small settlement approximately downriver. In the summer, the family lived at their Yukon River cabin, harvesting fish for subsistence and boarding the dogs of fellow mushers. In 1938, the family were underbid for the main contract for mail delivery in the area by a bush pilot. Ed Biederman retired shortly afterward and died in 1945. The final dog sled mail route was replaced in 1963. That final route was from Gambell to Savoonga and was run by Chester Noongwook. In January 1995, he donated the mail-delivery sled he used to the National Postal Museum in Washington, D.C., where it hangs today. One month after making the delivery, he died on February 22, 1995.

Example Output: That final route was from Gambell to Savoonga and was run by Chester Noongwook

Example Input: 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.

Example Output: 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

Example Input: Question: Who had the longer tenure at the Rockefeller Institute, Emil L. Smith or Max Bergmann? Passage:Initially intending to go into medicine, Smith became interested in biology and organic chemistry during his second year at Columbia University. He earned a B.S. in 1931 and stayed at Columbia to study photosynthesis under Selig Hecht, completing a Ph.D. in biophysics in 1936. In 1938, he went to Cambridge University on a Guggenheim Fellowship to work with David Keilin on the chlorophyll-protein complex. Upon returning to the U.S. during World War II, he took a position at Yale University's Connecticut Agricultural Experiment Station to work with Hubert Bradford Vickery. He joined the lab of eminent protein chemist Max Bergmann at the Rockefeller Institute in 1940, where he worked with a number of important biochemists and began a significant line of research on the intestinal enzyme erepsin.

Example Output:
He joined the lab of eminent protein chemist Max Bergmann at the Rockefeller Institute in 1940, where he worked with a number of important biochemists and began a significant line of research on the intestinal enzyme erepsin