The problem: Answer a question about this article:
Forests cover 24 percent of Oklahoma and prairie grasslands composed of shortgrass, mixed-grass, and tallgrass prairie, harbor expansive ecosystems in the state's central and western portions, although cropland has largely replaced native grasses. Where rainfall is sparse in the western regions of the state, shortgrass prairie and shrublands are the most prominent ecosystems, though pinyon pines, red cedar (junipers), and ponderosa pines grow near rivers and creek beds in the far western reaches of the panhandle. Southwestern Oklahoma contains many rare, disjunct species including sugar maple, bigtooth maple, nolina and southern live oak.
What part of Oklahoma has low rainfall?
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The answer: western


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Society throughout Europe was disturbed by the dislocations caused by the Black Death. Lands that had been marginally productive were abandoned, as the survivors were able to acquire more fertile areas. Although serfdom declined in Western Europe it became more common in Eastern Europe, as landlords imposed it on those of their tenants who had previously been free. Most peasants in Western Europe managed to change the work they had previously owed to their landlords into cash rents. The percentage of serfs amongst the peasantry declined from a high of 90 to closer to 50 per cent by the end of the period. Landlords also became more conscious of common interests with other landholders, and they joined together to extort privileges from their governments. Partly at the urging of landlords, governments attempted to legislate a return to the economic conditions that existed before the Black Death. Non-clergy became increasingly literate, and urban populations began to imitate the nobility's interest in chivalry.
What noble interest did city-dwellers start to mimic in this period?
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The answer: chivalry


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West's fifth album, My Beautiful Dark Twisted Fantasy, has been noted by writers for its maximalist aesthetic and its incorporation of elements from West's previous four albums. Entertainment Weekly's Simon Vozick-Levinson perceives that such elements "all recur at various points", namely "the luxurious soul of 2004's The College Dropout, the symphonic pomp of Late Registration, the gloss of 2007's Graduation, and the emotionally exhausted electro of 2008's 808s & Heartbreak". Sean Fennessey of The Village Voice writes that West "absorb[ed] the gifts of his handpicked collaborators, and occasionally elevat[ed] them" on previous studio albums, noting collaborators and elements as Jon Brion for Late Registration, DJ Toomp for Graduation, and Kid Cudi for 808s & Heartbreak.
Which album by Kanye West has been talked about by writers for having maximalist aesthetic?
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The answer: My Beautiful Dark Twisted Fantasy


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At Princeton, the physicist Robert R. Wilson encouraged Feynman to participate in the Manhattan Project—the wartime U.S. Army project at Los Alamos developing the atomic bomb. Feynman said he was persuaded to join this effort to build it before Nazi Germany developed their own bomb. He was assigned to Hans Bethe's theoretical division and impressed Bethe enough to be made a group leader. He and Bethe developed the Bethe–Feynman formula for calculating the yield of a fission bomb, which built upon previous work by Robert Serber.
What did Feynman produce with the help of Bethe?
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The answer:
Bethe–Feynman formula