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

[EX Q]: In pupa stage of their life cycle do insects begin developing their wings.
[EX A]: In what stage of their life cycle do insects begin developing their wings?

[EX Q]: You can use night goggles to see infrared light.
[EX A]: What piece of technology can you use to see infrared light?

[EX Q]: Air can be separated into several elements.
[EX A]:
Which of the following substances can be separated into several elements?