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: Muscle type of cell function relies on microfilaments, which are the actin components of the cytoskeleton.

Answer: What type of cell function relies on microfilaments, which are the actin components of the cytoskeleton?

Question: Mercury is the name of the smallest planet in our solar system, which is also nearest to the sun.

Answer: What is the name of the smallest planet in our solar system, which is also nearest to the sun?

Question: A vapor light produces visible light by electroluminescence process.

Answer:
A vapor light produces visible light by what process?