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

Example Input: A frog develops (a/an) lungs as it changes from a tadpole to an adult frog.
Example Output: Which of the following structures does a frog develop as it changes from a tadpole to an adult frog?

Example Input: Stirring, surface area, and temperature affect the rate at solute dissolves what occurs.
Example Output: Stirring, surface area, and temperature affect the rate at which what occurs?

Example Input: Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.
Example Output:
Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?