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: moist air falls on the windward side of a mountain. 
Question: Where does moist air fall on a mountain?
Example Output: windward side.

Example Input: Fact: Mutations can be detected by analysis on gene abnormalities. 
Question: Which process of gene abnormalities can mutations be detected?
Example Output: analysis.

Example Input: Fact: Blood pH may become unstable if the rate of breathing is too fast or too slow. 
Question: If the rate of breathing is too fast or too slow, what my become unstable?
Example Output:
blood pH.