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: snow falls during the winter in some environments
Example Output: In southern Africa we are more likely to see snow in?

Example Input: Fact: if an animal eats another animal then that animal is a carnivore or omnivore or predator
Example Output: Which eats other creatures?

Example Input: Fact: if a tree is located near a sidewalk then the roots of that tree might crack the sidewalk
Example Output:
When tree roots grow, sometimes they?