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

[EX Q]: Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.
[EX A]: Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?

[EX Q]: A covalent network solid is a compound in which all of the atoms are connected to one another by covalent bonds.
[EX A]: What is a compound in which all of the atoms are connected to one another by covalent bonds?

[EX Q]: In paragraph 2, they had been untouched for centuries does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures.
[EX A]:
In paragraph 2, what does the phrase à¥ˆ€œfrozen in timeà¥ˆ€ suggest about the figures?