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: farming cause nutrients in the soil to decrease

SOLUTION: a soil in a village seems to be nutrient deficient, what might have happened?

PROBLEM: Fact: riding a bike does not cause pollution

SOLUTION: Riding a two wheeled human powered vehicle is good for the environment because?

PROBLEM: Fact: wind carries sand from one place to another place

SOLUTION:
2000 years ago, this method would likely have brought sand from the coast to the desert?