[Q]: Sentence: Only a minority of the world's population uses DST because Asia and Africa generally do not observe it. Question: Which two continents that comprise a majority of the population worldwide don't observe DST?
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[A]: yes

[Q]: Sentence: Inside the Port of Palermo there is a section known as "tourist marina" for sailing yachts and catamarans. Question: How many passengers travel by Palermo ferry annually?
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[A]: no

[Q]: Sentence: In turn the clitellates were divided into oligochaetes, which include earthworms, and hirudinomorphs, whose best-known members are leeches. Question: What subtype of clitellates contains leeches?
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[A]:
yes