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: birds sometimes eat berries

SOLUTION: Birds feed their babies by?

PROBLEM: Fact: damming a river can cause a lake to form

SOLUTION: If a beaver does what it does in order to build its home, then near the river will form?

PROBLEM: Fact: riding a bike does not cause pollution

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