[Q]: Sentence: North American megafauna extinction was coincidental with the Younger Dryas impact event, possibly making hunting a less critical factor in prehistoric species loss than had been previously thought. Question: When was Australian's megafauna widespread?
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[A]: no

[Q]: Sentence: Alum was added to paper to assist in sizing, making it somewhat water resistant so that inks did not "run" or spread uncontrollably. Question: What acidic salts were commonly found in the early types of paper produced?
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[A]: yes

[Q]: Sentence: Towards the end of the war as the role of strategic bombing became more important, a new command for the U.S. Strategic Air Forces in the Pacific was created to oversee all U.S. strategic bombing in the hemisphere, under United States Army Air Forces General Curtis LeMay. Question: Who was over the new U.S. Strategic Air Forces in the Pacific command?
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[A]:
yes