Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

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

A: Which of the following is an example of a form of energy?
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Q: Mercury is the name of the smallest planet in our solar system, which is also nearest to the sun.

A: What is the name of the smallest planet in our solar system, which is also nearest to the sun?
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Q: Horse of these most likely has the greatest mass.

A:
Which of these most likely has the GREATEST mass?
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