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: mammals prevent death with the help of a diaphragm. 
Question: What do mammals use a diaphragm for?

Output: Preventing death.


Input: Consider Input: Fact: many chemical messengers that control body functions are proteins. 
Question: What are many chemical messengers that control body functions?

Output: proteins.


Input: Consider Input: Fact: lenses are used to see small things by biologists by making them appear bigger. 
Question: what are used to see small things by biologists to make them appear bigger?


Output: lenses.