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: decomposition increases amount of organic matter in dirt. 
Question: What increases amount of organic matter in dirt?
Example Output: decomposition.

Example Input: Fact: blood traveling to the heart is deoxygenated. 
Question: Blood traveling to the heart is?
Example Output: deoxygenated.

Example Input: Fact: Falcons use sight to hunt. 
Question: Which of these require sight to hunt?
Example Output:
falcon.