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

Example Input: The cells in the follicle undergo physical changes and produce a structure called a corpus luteum.
Example Output: The cells in the follicle undergo physical changes and produce a structure called a what?

Example Input: Sodium chloride is an odorless white solid that is harmless unless consumed in large quantities.
Example Output: What is an odorless white solid that is harmless unless consumed in large quantities?

Example Input: Nuclear bombardment procedure helps modern nuclear physics convert lead into gold.
Example Output:
Which procedure helps modern nuclear physics convert lead into gold?