[Q]: Sentence: Previous influxes among ethnic groups have been African-Americans in the postwar era, and Irish, Italian and (to a lesser degree) Question: In modern times has the population of White/Caucasian increase or decrease since the 70s?
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[A]: no

[Q]: Sentence: In October 2011, Moody's Investor Services downgraded nine Portuguese banks due to financial weakness. Question: For what reason did Moody's Investor Services downgrade nine Portuguese banks in 2011?
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[A]: yes

[Q]: Sentence: The term "object-relational impedance mismatch" described the inconvenience of translating between programmed objects and database tables. Question: How is the problem of object-relational impedance mismatch corrected?
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[A]:
no