[Q]: Sentence: In the Carboniferous, rainforest collapse led to a great loss of plant and animal life. Question: What happened in the Carboniferous?
++++++++++
[A]: yes

[Q]: Sentence: The FIBA Africa Championship 1981 was hosted by Somalia from 1523 December 1981. Question: When did the 1981 FIBA African Championship take place?
++++++++++
[A]: yes

[Q]: Sentence: Birds need to alter their metabolism in order to meet the demands of migration. Question: How do birds store energy?
++++++++++
[A]:
no