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

Example Input: Phospholipids are vesicles made of.
Example Output: What are vesicles made of?

Example Input: Covalent solutes separate into individual molecules when dissolved.
Example Output: Covalent solutes separate into what when dissolved?

Example Input: Control rods play an important role in the modulation of the nuclear chain reaction.
Example Output:
What play an important role in the modulation of the nuclear chain reaction?