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: when a hemisphere is tilted towards the sun , that hemisphere receives more direct sunlight.

Output: direct during sunlight summer.


Input: Consider Input: Fact: a thermal insulator slows the transfer of heat.

Output: heat transfer causes.


Input: Consider Input: Fact: Corals form large colonies in shallow tropical water.


Output: Corals.