Problem: Given the question: Extract the answer to the question from the following context. Question: Of the works discussed, which work was composed most recently? Context: Later Indian materialist Jayaraashi Bhatta (6th century) in his work Tattvopaplavasimha ("The upsetting of all principles") refuted the Nyaya Sutra epistemology. The materialistic Carvaka philosophy appears to have died out some time after 1400. When Madhavacharya compiled Sarva-darsana-samgraha (a digest of all philosophies) in the 14th century, he had no Carvaka/Lokayata text to quote from, or even refer to.
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The answer is:
Sarva-darsana-samgraha

Problem: Given the question: Extract the answer to the question from the following context. Question: Who has the most dense collection of people who know how to fly? Context: Many communities have small air taxi services. These operations originated from the demand for customized transport to remote areas. Perhaps the most quintessentially Alaskan plane is the bush seaplane. The world's busiest seaplane base is Lake Hood, located next to Ted Stevens Anchorage International Airport, where flights bound for remote villages without an airstrip carry passengers, cargo, and many items from stores and warehouse clubs. In 2006 Alaska had the highest number of pilots per capita of any U.S. state.
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The answer is:
Alaska

Problem: Given the question: Extract the answer to the question from the following context. Question: Scapa Flow was used for what purpose? Context: During the First World War, Plymouth was the port of entry for many troops from around the Empire and also developed as a facility for the manufacture of munitions. Although major units of the Royal Navy moved to the safety of Scapa Flow, Devonport was an important base for escort vessels and repairs. Flying boats operated from Mount Batten.
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The answer is:
safety