instruction:
Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.
question:
Fact: cell regeneration requires rest. 
Question: what requires rest?
answer:
cell regeneration.


question:
Fact: Irradiating food can be used to kill something that causes fermentation in the food. 
Question: Irradiating food can be used to kill what in the food?
answer:
Something that causes fermentation.


question:
Fact: Eating food with pesticides is called pesticide exposure. 
Question: What is it called when you eat food that contains pesticides?
answer:

Exposure.