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: Veins generally carry blue blood. 
Question: Veins generally carry what type of blood?
Example Output: blue.

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: within roundworms, a range of reproductive systems occur. 
Question: In what does a range of reproductive systems occur?
Example Output:
roundworms.