TASK DEFINITION: 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.
PROBLEM: Fact: December is during the winter in the northern hemisphere

SOLUTION: In December, someone in England probably wants to?

PROBLEM: Fact: large trees block sunlight from reaching the ground

SOLUTION: Large trees block sunlight from reaching what?

PROBLEM: Fact: an animal can survive in an environment with little food by storing fat

SOLUTION:
A bear in the arctic can go a long time without eating?