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.

Input: Consider Input: Fact: Meiosis is the type of cell division that produces gametes.

Output: example of gametes are.


Input: Consider Input: Fact: producing thrust causes something to move.

Output: engines produce thrust.


Input: Consider Input: Fact: Carbon may be stored in sedimentary rock for millions of years.


Output: Carbon sources.