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.

[EX Q]: Fact: medicine is used for curing people when they are sick.
[EX A]: Medicine prescription.

[EX Q]: Fact: burning fossil fuels increases the carbon in the atmosphere.
[EX A]: carbon atmosphere.

[EX Q]: Fact: killing microorganisms in food can be used to extend the shelf life of that food.
[EX A]:
freezing food killing microorganisms.