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: All chemical reactions require activation energy to get started.

SOLUTION: activation energy enzyme.

PROBLEM: Fact: Climate is generally described in terms of temperature and moisture.

SOLUTION: Moisture in  air.

PROBLEM: Fact: fog is formed by water vapor condensing in the air.

SOLUTION:
fog is formed.