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

Ex Input:
Mercury is the name of the smallest planet in our solar system, which is also nearest to the sun.

Ex Output:
What is the name of the smallest planet in our solar system, which is also nearest to the sun?

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

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

Ex Input:
For social animals, communication essential.

Ex Output:
For what kind of animal is communication essential?