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.

Fact: if an animal is trained to do something then that something is a learned behavior
Which would be considered a learned behavior?

Fact: the moon does not contain water
Which doesn't contain water?

Fact: steam is a kind of water above 100 degrees celsius

Above 100 degrees Celsius a kind of water is what?