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.

Ex Input:
Fact: a revolution of the moon around the Earth takes 1 month

Ex Output:
A new moon can be observed every?


Ex Input:
Fact: flowing liquid can push objects

Ex Output:
If a creek is headed to the west and a stone is tossed in and sinks, but a leaf also drops in and stays on top of the water, what will likely happen?


Ex Input:
Fact: In the food chain process bacteria have the role of decomposer

Ex Output:

Bacteria in the soil feed on?