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: Most arthropods are insects.

Output: arthropod.


Input: Consider Input: Fact: if heat is conducted to an object then that object will become hot.

Output: conducted heat.


Input: Consider Input: Fact: a sandbar is formed by water moving sediment downstream.


Output: sandbar habitat.