TASK DEFINITION: In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.
PROBLEM: Fact: hydropower requires damming a river.

SOLUTION: damming river.

PROBLEM: Fact: Organisms use lipids to store energy.

SOLUTION: human organisms.

PROBLEM: Fact: coal is used to produce electricity by burning in coal-fire power stations.

SOLUTION:
Electricity is energy.