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: Sperm are released into the surrounding water through the osculum.
[EX A]: Male gamete are sperm.

[EX Q]: Fact: Some touch receptors sense differences in temperature or pain.
[EX A]: fingers contain touch receptors.

[EX Q]: Fact: Heterotrophs get food by eating other living things.
[EX A]:
Heterotrophs.