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: Female mammals have mammary glands.

Ex Output:
female mammals.


Ex Input:
Fact: Shivering occurs when many muscles contract a little bit all at once.

Ex Output:
Shivering occurs when many muscles contract a little bit all at once.


Ex Input:
Fact: air pollution can cause the pH of soil to decrease.

Ex Output:

acidic  soil crops.