[Q]: Sentence: Authors choose literary device according to what psychological emotion he or she is attempting to describe, thus certain literary devices are more emotionally effective than others. Question: What determines what literary structure a literary author uses for expression of ideas?
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[A]: yes

[Q]: Sentence: The mandolin's paired strings facilitate this technique: the plectrum (pick) strikes each of a pair of strings alternately, providing a more full and continuous sound than a single string would. Question: What parts of the mandolin faciliate the tremolo technique?
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[A]: yes

[Q]: Sentence: Many of the early groups became extinct during the Permian-Triassic extinction event, the largest mass extinction in the history of the Earth, around 252 million years ago. Question: In addition to Carboniferous, what other insect order is inclusive of extant groups, stem groups and Paleozoic groups?
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[A]:
no