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 Input:
Fact: Some viruses can cause cancer.

Ex Output:
VACCINATION CERVICAL.


Ex Input:
Fact: Corals form large colonies in shallow tropical water.

Ex Output:
Corals.


Ex Input:
Fact: contact between rocks over long periods of time causes rocks to smooth.

Ex Output:

Rocks are formed.