Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Most of the digestion reactions occur in the small intestine.

Answer: Where do most of the digestion reactions occur?

Question: A student should use a balance to compare the masses of two small rocks.

Answer: Which tool should a student use to compare the masses of two small rocks?

Question: A motor response type of response is generated when a stimulus is received by the nervous system.

Answer:
What type of response is generated when a stimulus is received by the nervous system?