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: cycles of freezing and thawing water cause ice wedging
[EX A]: Ice wedging is caused by cycles of freezing and thawing of what?

[EX Q]: Fact: processes sometimes produce waste products
[EX A]: What product eventually will become human waste?

[EX Q]: Fact: as the temperature of a liquid increases , the rate of evaporation of that liquid will increase
[EX A]:
A gallon of water in a pot is placed over a fire. After an hour there will be?