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: The sound in a loud classroom is an example of a form of energy.

Answer: Which of the following is an example of a form of energy?


Question: Bile acids, needed to emulsify lipids, are stored in the body in the gallbladder.

Answer: Where are bile acids, needed to emulsify lipids, stored in the body?


Question: Metals start out as ore.

Answer:
What do metals start out as?