Given a statement, generate a question such that the answer is contained in that statement.

[Q]: ice ages buried Earth in permafrost for millions of years at a time
[A]: How many years have ice ages buried Earth in permafrost?


[Q]: Stimuli can cause the brain to experience pain.
[A]: Stimuli can cause the brain to experience what?


[Q]: If someone is not talking, begin with ventilation
[A]:
What do you need to do if someone is not talking?