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: if an animal sweats then that animal 's bodily water decreases.

Output: animal human.


Input: Consider Input: Fact: Oxygen is essential for cellular respiration for all aerobic organisms.

Output: aerobic organism.


Input: Consider Input: Fact: Complex chemistry is needed to carry out all the functions of life.


Output: Complex chemistry.