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: Transcription takes place in the nucleus.

Output: cell transcription.


Input: Consider Input: Fact: Water is essential for all life on Earth.

Output: earth wildlife.


Input: Consider Input: Fact: cold fronts cause thunderstorms as they pass by.


Output: cold front.