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

[Q]: Analysts who study the process that preserves a once living thing are called paleontologists
[A]: What are analysts who study the process that preserves a once living thing called?

[Q]: significant physical, emotion, and social changes can be a trying time
[A]: What types of changes can be a difficult time?

[Q]: Pregnancy can happen if protection breaks.
[A]:
When can pregnancy happen?