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 Q]: Fact: an inclined plane is used for raising objects
[EX A]: A ramp can move a person to what level?

[EX Q]: Fact: acid rain has a negative impact on water quality
[EX A]: If it starts raining acid rain you should?

[EX Q]: Fact: wind and rain cause erosion
[EX A]:
The face of the sphinx has changed from?