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.

Input: Consider Input: Fact: a warm front causes cloudy and rainy weather.

Output: cloudy and rainy weather.


Input: Consider Input: Fact: a human requires sleep to be healthy.

Output: brainwaves during sleep.


Input: Consider Input: Fact: Thyroid hormones increase the rate of metabolism in cells throughout the body.


Output: Thyroid hormones.