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.

[Q]: Fact: Amphibians have a relatively complex circulatory system with a three-chambered heart.
[A]: amphibian frog.


[Q]: Fact: hearing is used for sensing sound by animals.
[A]: animal dog.


[Q]: Fact: condensing causes a liquid to form.
[A]:
condensation form.