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: A(n) well is a hole that is dug or drilled through the ground down to an aquifer. Question: What is hole that is dug or drilled through the ground down to an aquifer?

Answer: well


Question: Sentence: The endocrine system produces hormones to regulate growth, development, and reproduction. Question: Which human organ system produces hormones to regulate growth, development, and reproduction?

Answer: endocrine


Question: Sentence: In atherosclerosis, thickening of an arterial wall due to plaque formation can restrict blood flow through the artery. Question: In atherosclerosis, thickening of an arterial wall due to this can restrict blood flow through the artery?

Answer:
plaque formation