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.

Input: Consider Input: Fact: memory cells help keep people from getting sick. 
Question: What helps keep people from getting sick?

Output: Memory cells.


Input: Consider Input: 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?

Output: Something that causes fermentation.


Input: Consider Input: Fact: Fallopian tubes are used in producing offspring. 
Question: What is necessary for the production of offspring?


Output: Fallopian tubes.