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: Secondary growth forms secondary vascular tissues and bark.
[EX A]: Secondary growth tree.

[EX Q]: Fact: if heat is conducted to an object then that object will become hot.
[EX A]: conducted heat.

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