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: Acid rain may be caused by air pollution. Question: Acid rain may be caused by what?

A: air pollution
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Q: Sentence: The earth's crust is composed of igneuos rock. Question: What is the earths crust composed of?

A: igneuos rock
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Q: Sentence: A clade is one way of classifying organisms. Question: What is one way of classifying organisms called?

A:
clade
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