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

Input: Consider Input: Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.

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


Input: Consider Input: Molar masses can be used to determine the mass of a quantity of material.

Output: What can be used to determine the mass of a quantity of material?


Input: Consider Input: Boron only occurs naturally in compounds with oxygen element.


Output: Boron only occurs naturally in compounds with what element?