Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Input: Consider Input: Fact: a plane travels through the atmosphere

Output: A person wanting to pay airfare will ride?


Input: Consider Input: Fact: a bat births live young

Output: Baby bats start doing what after at least a month after birth?


Input: Consider Input: Fact: migration is when animals move to different locations in an annual cycle


Output: Which phenomenon is studied about once annually?