[Q]: Sentence: Details of school casualties had been under non-governmental investigation since December 2008 by volunteers including artist and architect Ai Weiwei, who had been constantly posting updates on his blog since March 2009. Question: When did an investigation occur under school casualties?
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[A]: yes

[Q]: Sentence: Where, as often, a new street or set of streets was developed, the road and pavements were raised up, and the gardens or yards behind the houses at a lower level, usually representing the original one. Question: Most town people lived in what type of houses?
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[A]: no

[Q]: Sentence: The country joined what is now the European Union in 1981. Question: What organization was Greek a founding member?
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[A]:
no