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: Genes are a part of coiled structures made of DNA and proteins. 
Question: What are a part of coiled structures made of DNA and proteins?
Example Output: genes.

Example Input: Fact: The things that are the smallest agents of disease are usually considered to be nonliving. 
Question: The things that are the smallest agents of disease are usually considered to be what?
Example Output: nonliving.

Example Input: Fact: changes in the environment are detected by sensory nerve cells. 
Question: what are detected by sensory nerve cells?
Example Output:
changes in the environment.