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: Cnidarians are invertebrates such as jellyfish and corals.

Output: Cnidarians.


Input: Consider Input: Fact: Some herbivores have more than one stomach.

Output: cows stomach.


Input: Consider Input: Fact: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.


Output: coin sinks in water.