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: the ovaries are used in reproduction.

Ex Output:
humans reproduction.


Ex Input:
Fact: Echinoderms lack a centralized nervous system.

Ex Output:
Echinoderms sand dollar.


Ex Input:
Fact: the uterus is used in reproduction.

Ex Output:

reproduction is having offspring.