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.

[EX Q]: Fact: when electricity flows to a light bulb , the light bulb will turn on.
[EX A]: electricity electrons.

[EX Q]: Fact: Balance is the ability to sense and maintain body position.
[EX A]: balance ear.

[EX Q]: Fact: water vapor condensing in clouds causes rain.
[EX A]:
clouds vapor.