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: faulting of rock in Earth 's crust causes earthquakes.

Output: Earthquakes are shaking.


Input: Consider Input: Fact: eating something that contains pollutants has a negative impact on an organism 's survival.

Output: organic food pollutants.


Input: Consider Input: Fact: Smog also contains particulates.


Output: Smog.