[Q]: Sentence: The 2011 World Wealth Report ranks economic activity in New Delhi at 39, but overall the capital is ranked at 37, above cities like Jakarta and Johannesburg. Question: Major cities like Jakarta and Johannesburg rank below New Delhi in what key statistic?
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[A]: yes

[Q]: Sentence: Cultural and career issues in the U.S. Air Force have been cited as one of the reasons for the shortfall in needed UAV operators. Question: Why did the USAF change its training methods on UAVs in 2014?
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[A]: no

[Q]: Sentence: Houses were built of dressed stone similar to the ones in Ancient Egypt. Question: What is a notable stone wall built in ancient Somalia?
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[A]:
no