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: Insects generally have two pairs of wings for flight.

Ex Output:
dragonflies are insects.


Ex Input:
Fact: x-rays are used in medical technology.

Ex Output:
medical technology helps.


Ex Input:
Fact: Immunity results from immunization.

Ex Output:

immunization vaccine.