[Q]: Question: "As of when is farming necessary?" Context: "As a result of the now near-universal human reliance upon agriculture, the few contemporary hunter-gatherer cultures usually live in areas unsuitable for agricultural use." Answer:
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[A]: now

[Q]: Question: "Which specific unit sold less than 2 millions units?" Context: "While the original Xbox sold poorly in Japan, selling just 2 million units while it was on the market (between 2002 and 2005),[citation needed] the Xbox 360 sold even more poorly, selling only 1.5 million units from 2005 to 2011. Edge magazine reported in August 2011 that initially lackluster and subsequently falling sales in Japan, where Microsoft had been unable to make serious inroads into the dominance of domestic rivals Sony and Nintendo, had led to retailers scaling down and in some cases discontinuing sales of the Xbox 360 completely." Answer:
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[A]: 360

[Q]: Question: "The capital of Kansas is what city?" Context: "The university's Medical Center and University Hospital are located in Kansas City, Kansas. The Edwards Campus is in Overland Park, Kansas, in the Kansas City metropolitan area. There are also educational and research sites in Parsons and Topeka, and branches of the University of Kansas School of Medicine in Wichita and Salina. The university is one of the 62 members of the Association of American Universities." Answer:
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[A]: Topeka

[Q]: Question: "What was the reason for being sad?" Context: "On Children's Day, June 1, 2008, many parents went to the rubble of schools to mourn for their children. The surviving children, who were mostly living in relief centres, performed ceremonies marking the special day, but also acknowledging the earthquake." Answer:
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[A]:
earthquake