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.

Example Input: Fact: A bill is used for catching prey by some birds. 
Question: What is used by some birds to catch their prey?
Example Output: a bill.

Example Input: Fact: loud noises can be dangerous. 
Question: What can loud noises be?
Example Output: dangerous.

Example Input: Fact: Renal failure may be treated with dialysis. 
Question: What may renal failure be treated with?
Example Output:
dialysis.