[Q]: Sentence: The 1469 marriage of Isabella I of Castile and Ferdinand II of Aragon and the 1479 death of John II of Aragon led to the creation of modern-day Spain. Question: In what year were Isabel I and Ferdinand II married?
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[A]: yes

[Q]: Sentence: There also remains a strong a cappella presence within Christian music, as some denominations purposefully do not use instruments during worship. Question: In place of instruments, what do some modern a cappella groups implement?
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[A]: no

[Q]: Sentence: Thus, the total number of Germans lies somewhere between 100 and more than 150 million, depending on the criteria applied (native speakers, single-ancestry ethnic Germans, partial German ancestry, etc.). Question: Where in Brazil is most of the German descendants located?
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[A]:
no