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 Q]: Fact: glass cause refraction of light.
[EX A]: glass mirror.

[EX Q]: Fact: Monotremes are mammals that reproduce by laying eggs.
[EX A]: hatch reproduction egg.

[EX Q]: Fact: Population size influences the chances of a species surviving.
[EX A]:
migration Population size.