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

[EX Q]: some pythons can go several weeks between meals.
[EX A]: How long can some pythons go between meals?

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

[EX Q]: Gene activity takes place in the nucleus
[EX A]:
Where does gene activity occur?