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: preventing the transfer of energy from an organism's body causes it to keep warm. 
Question: what can preventing the transfer of cause the body to keep warm in an organism?
Example Output: energy.

Example Input: Fact: plants are sensitive to darkness. 
Question: What are plants sensitive to?
Example Output: darkness.

Example Input: Fact: All animals have protein as an essential nutrient. 
Question: Protein is an essential nutrient for what?
Example Output:
Animals.