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: Melanin amount is a polygenic trait. 
Question: what is a polygenic trait?
Example Output: melanin amount.

Example Input: Fact: nerve receptors in the skin sense temperature and pain. 
Question: what in the skin sense temperature and pain?
Example Output: nerve receptors.

Example Input: Fact: faulting of rock causes tremors. 
Question: What causes tremors?
Example Output:
faulting of rocks.