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: An excellent solvent that holds heat well and allows hydrogen bonds, water substance has many properties critical to life.

Output: An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life?

Input: Consider Input: If no unbalanced force acts on an object the object remains at constant velocity or at rest.
Output: If no unbalanced force acts on an object the object remains at constant velocity or what?