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

Input: Consider Input: In a carbon triple bond, three pairs of electrons are shared.

Output: In a carbon triple bond, how many pairs of electrons are shared?


Input: Consider Input: Soft of these best describes the way a feather feels.

Output: Which of these BEST describes the way a feather feels?


Input: Consider Input: Trees need the vascular to transport nutrients.
Output: What system do trees need to transport nutrients?