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: Phenotypic expression of skin color varies over a wide range. 
Question: Phenotypic what of skin color varies over a wide range?
Example Output: expression.

Example Input: Fact: CPU time can be used as a clock. 
Question: What computer component can you use to measure time?
Example Output: CPU.

Example Input: Fact: Skin color occurs over a wide range. 
Question: Human skin color?
Example Output:
occurs over a wide range.