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.

Example Input: Fact: if gas is heated then that gas will rise
Example Output: What will air usually do when heated up beyond a certain point?

Example Input: Fact: chemical splashing sometimes occurs during experiments
Example Output: When doing experiments?

Example Input: Fact: a flower is a source of nectar
Example Output:
What is a source of nectar?