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.

Q: Sentence: Air pollution causes acid rain, ozone depletion, and global warming. Question: What causes acid rain, ozone depletion, and global warming?

A: air pollution
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Q: Sentence: Reactive elements are able to combine more easily with other elements. Question: Reactive elements are able to combine more what with other elements?

A: easily
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Q: Sentence: Electrostatic repulsions normally prevent a positively charged particle from colliding and reacting with a positively charged nucleus, but may be overcome by kinetic energy. Question: What normally prevent a positively charged particle from colliding and reacting with a positively charged nucleus, but may be overcome by kinetic energy?

A:
electrostatic repulsions
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