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: Populations of viruses do not grow through cell division because they are not cells.

Output: cell division mitosis.


Input: Consider Input: Fact: Antibiotics have no effect on viruses.

Output: Antibiotics.


Input: Consider Input: Fact: an aquatic animal requires great amounts of water to survive.


Output: aquatic animal whale.