[Q]: Question: "__ saw the migration of the Han Chinese"  Context: "During the period of North–South division, Nanjing remained the capital of the Southern dynasties for more than two and a half centuries. During this time, Nanjing was the international hub of East Asia. Based on historical documents, the city had 280,000 registered households. Assuming an average Nanjing household had about 5.1 people at that time, the city had more than 1.4 million residents."  Answer:
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[A]: North–South division


[Q]: Question: "What was the short name for the forces?"  Context: "By mid-1950, North Korean forces numbered between 150,000 and 200,000 troops, organized into 10 infantry divisions, one tank division, and one air force division, with 210 fighter planes and 280 tanks, who captured scheduled objectives and territory, among them Kaesong, Chuncheon, Uijeongbu, and Ongjin. Their forces included 274 T-34-85 tanks, 200 artillery pieces, 110 attack bombers, some 150 Yak fighter planes, 78 Yak trainers, and 35 reconnaissance aircraft. In addition to the invasion force, the North KPA had 114 fighters, 78 bombers, 105 T-34-85 tanks, and some 30,000 soldiers stationed in reserve in North Korea. Although each navy consisted of only several small warships, the North and South Korean navies fought in the war as sea-borne artillery for their in-country armies."  Answer:
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[A]: North KPA


[Q]: Question: "Which of the following movies was not produced before 2008: Mona Lisa Smile, The Life Before Her Eyes, or Everybody's Fine?"  Context: "Several recent movies have been filmed in New Haven, including Mona Lisa Smile (2003), with Julia Roberts, The Life Before Her Eyes (2007), with Uma Thurman, and Indiana Jones and the Kingdom of the Crystal Skull (2008) directed by Steven Spielberg and starring Harrison Ford, Cate Blanchett and Shia LaBeouf. The filming of Crystal Skull involved an extensive chase sequence through the streets of New Haven. Several downtown streets were closed to traffic and received a "makeover" to look like streets of 1957, when the film is set. 500 locals were cast as extras for the film. In Everybody's Fine (2009), Robert De Niro has a close encounter in what is supposed to be the Denver train station; the scene was filmed in New Haven's Union Station."  Answer:
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[A]: Everybody's Fine


[Q]: Question: "How do affirmative action programs disincentivize poor white people to work harder?"  Context: "Terry Eastland, the author who wrote From Ending Affirmative Action: The Case for Colorblind Justice states, "Most arguments for affirmative action fall into two categories: remedying past discrimination and promoting diversity". Eastland believes that the founders of affirmative action did not anticipate how the benefits of affirmative action would go to those who did not need it, mostly middle class minorities. Additionally, she argues that affirmative action carries with it a stigma that can create feelings of self-doubt and entitlement in minorities. Eastland believes that affirmative action is a great risk that only sometimes pays off, and that without it we would be able to compete more freely with one another. Libertarian economist Thomas Sowell identified what he says are negative results of affirmative action in his book, Affirmative Action Around the World: An Empirical Study. Sowell writes that affirmative action policies encourage non-preferred groups to designate themselves as members of preferred groups [i.e., primary beneficiaries of affirmative action] to take advantage of group preference policies; that they tend to benefit primarily the most fortunate among the preferred group (e.g., upper and middle class blacks), often to the detriment of the least fortunate among the non-preferred groups (e.g., poor white or Asian); that they reduce the incentives of both the preferred and non-preferred to perform at their best – the former because doing so is unnecessary and the latter because it can prove futile – thereby resulting in net losses for society as a whole; and that they engender animosity toward preferred groups as well.:115–147"  Answer:
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[A]:
it can prove futile