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.

Input: Consider Input: Fact: camouflage is used for protection by prey against predators.

Output: camouflage animals.


Input: Consider Input: Fact: Bioterrorism is the intentional release or spread of agents of disease.

Output: agents of disease.


Input: Consider Input: Fact: Some arthropods have special excretory structures.


Output: arthropod clam.