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: thick fur can be used for keeping warm.

Output: bears fur.


Input: Consider Input: Fact: a light bulb requires electrical energy to produce light.

Output: coal can be used to create electricity.


Input: Consider Input: Fact: Chromosomes are coiled structures made of DNA and proteins.


Output: Chromosomes.