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: Translation reads the genetic code in mRNA and makes a protein.
[EX A]: Translation genetic code.

[EX Q]: Fact: Sponges have specialized cells called collar cells.
[EX A]: collar cell.

[EX Q]: Fact: Bone is less flexible than cartilage but stronger.
[EX A]:
bone cartilage.