[Q]: Sentence: A short time later, his demonstration of an early telephone prototype at the 1876 Centennial Exposition in Philadelphia brought the telephone to international attention. Question: In what city was the 1876 Centennial Exposition?
++++++++++
[A]: yes

[Q]: Sentence: The colossal demonstration marked the 50th anniversary of the MolotovRibbentrop Pact that divided Eastern Europe into spheres of influence and led to the occupation of the Baltic states in 1940. Question: What states did the chain extend over?
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[A]: no

[Q]: Sentence: Starting 2016, each conference will have only four teams as the champion San Jose SaberCats announced in November 2015 that they were ceasing activity for "reasons not associated with League operations." Question: Along with the American Conference, what is the other conference in the AFL?
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[A]:
no