[Q]: Sentence: By the end of LaserDisc's run, DVDs were living up to their potential as a superior format. Question: What step of the DVD production process causes contrast banding?
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[A]: no

[Q]: Sentence: Among a variety of sanctions against Turkey, in mid-1975 the US Congress imposed an arms embargo on Turkey for using American-supplied equipment during the Turkish invasion of Cyprus in 1974. Question: Why did the US impose an arms embargo on Turkey?
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[A]: yes

[Q]: Sentence: Sand, in a letter to Grzymaa of June 1838, admitted strong feelings for the composer and debated whether to abandon a current affair in order to begin a relationship with Chopin; she asked Grzymaa to assess Chopin's relationship with Maria Wodzinska, without realising that the affair, at least from Maria's side, was over. Question: What was a possible reason for Chopin's failed engagement to Maria Wodzinska?
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[A]:
no