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

Input: Consider Input: The cells in the follicle undergo physical changes and produce a structure called a corpus luteum.

Output: The cells in the follicle undergo physical changes and produce a structure called a what?


Input: Consider Input: The scientific process of collecting data outside the lab (in the "wild") is known as field work kind of work.

Output: The scientific process of collecting data outside the lab (in the "wild") is known as what kind of work?


Input: Consider Input: Sodium-potassium pumps help nerve cells establish a voltage across their plasma membranes.


Output: Sodium-potassium pumps help nerve cells establish a voltage across their what?