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: friction is used for stopping a vehicle by brakes.

SOLUTION: braking cars can fishtail.

PROBLEM: Fact: sandpaper is used to smooth wooden objects.

SOLUTION: Wooden object.

PROBLEM: Fact: boiling means change from a liquid into a gas by adding heat energy.

SOLUTION:
boiling change.