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.
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Question: Sentence: Trees need the vascular to transport nutrients. Question: What system do trees need to transport nutrients?

Answer: vascular

Question: Sentence: The mineral quartz is used to produce glass. Question: What mineral is used to produce glass?

Answer: quartz

Question: Sentence: To prevent dehydration is water important for the nervous system. Question: Why is water important for the nervous system?

Answer:
to prevent dehydration