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: hibernation is used for conserving energy by some animals.

Ex Output:
conserving energy helps animals survive.


Ex Input:
Fact: heavy rains cause flooding.

Ex Output:
flood rain.


Ex Input:
Fact: Water is essential for all life on Earth.

Ex Output:

earth wildlife.