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

Input: Consider Input: The second step in eukaryotic cell division is division of nucleus part of the cell.

Output: The second step in eukaryotic cell division is division of which part of the cell?

Input: Consider Input: The thalamus helps to regulate consciousness, arousal, and sleep states.

Output: What helps to regulate consciousness, arousal, and sleep states?

Input: Consider Input: The precapillary sphincters regulate(s) the passage of blood into capillary beds.
Output: What regulates the passage of blood into capillary beds?