The problem: Answer a question about this article:
Though human activities have allowed the expansion of a few species, such as the barn swallow and European starling, they have caused population decreases or extinction in many other species. Over a hundred bird species have gone extinct in historical times, although the most dramatic human-caused avian extinctions, eradicating an estimated 750–1800 species, occurred during the human colonisation of Melanesian, Polynesian, and Micronesian islands. Many bird populations are declining worldwide, with 1,227 species listed as threatened by BirdLife International and the IUCN in 2009.
When did the most dramatic human-caused avian extinctions occur?
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The answer: during the human colonisation of Melanesian, Polynesian, and Micronesian islands


The problem: Answer a question about this article:
Seen in panorama, Detroit's waterfront shows a variety of architectural styles. The post modern Neo-Gothic spires of the One Detroit Center (1993) were designed to blend with the city's Art Deco skyscrapers. Together with the Renaissance Center, they form a distinctive and recognizable skyline. Examples of the Art Deco style include the Guardian Building and Penobscot Building downtown, as well as the Fisher Building and Cadillac Place in the New Center area near Wayne State University. Among the city's prominent structures are United States' largest Fox Theatre, the Detroit Opera House, and the Detroit Institute of Arts.
What is a famous opera house in Detroit?
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The answer: Detroit Opera House


The problem: Answer a question about this article:
On January 9, 1957, Karachay Autonomous Oblast and Chechen-Ingush Autonomous Soviet Socialist Republic were restored by Khrushchev and they were transferred from the Georgian SSR back to the Russian SFSR.
Who transferred the Chechen-Ingush Autonomous Soviet Socialist Republic in 1957?
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The answer: Khrushchev


The problem: Answer a question about this article:
Boston's park system is well-reputed nationally. In its 2013 ParkScore ranking, The Trust for Public Land reported that Boston was tied with Sacramento and San Francisco for having the third-best park system among the 50 most populous US cities. ParkScore ranks city park systems by a formula that analyzes the city's median park size, park acres as percent of city area, the percent of residents within a half-mile of a park, spending of park services per resident, and the number of playgrounds per 10,000 residents.
Parkscore ranks the number of resident within what distance of the park?
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The answer:
a half-mile