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: bluebirds live in grassy spaces
Bluebirds are found in?

Fact: mammals give birth to live young
Birds give birth to their babies while still in an egg. Mammals, however, give birth to their babies?

Fact: some animals move quickly to escape predators

Jack rabbits move very fast to avoid?