Given a statement, generate a question such that the answer is contained in that statement.

[EX Q]: Unmelted winter snow and ice buried the earth
[EX A]: What buried the earth?

[EX Q]: Hiding can be employed for staying away from predators.
[EX A]: What can hiding be employed for?

[EX Q]: Going under trees can be used by animals to avoid predators
[EX A]:
Who can use going under trees to avoid predators?