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: a telephone is used for communication by humans over long distances.

Ex Output:
communication convey.


Ex Input:
Fact: healing requires rest.

Ex Output:
healing cells.


Ex Input:
Fact: cutting down trees has a negative impact on an ecosystem.

Ex Output:

cutting down trees.