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: the smell of rotting meat attracts flies
Example Output: What would a fly find most compelling?

Example Input: Fact: offspring receive genes from their parents through DNA
Example Output: Offspring receive genes from their parents via what?

Example Input: Fact: down feathers are a thermal energy insulator
Example Output:
The purpose of bird feathers, especially down, is to?