In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

[EX Q]: Sentence: Instead of heat, organisms use catalysis to speed up reactions. Question: Instead of heat, organisms use what to speed up reactions?
[EX A]: catalysis

[EX Q]: Sentence: The haploid gametophyte produces gametes through mitosis. Question: By what process does the haploid gametophyte produce the gametes?
[EX A]: mitosis

[EX Q]: Sentence: Acid rain may be caused by air pollution. Question: Acid rain may be caused by what?
[EX A]:
air pollution