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: Blood is a fluid tissue that delivers oxygen and nutrients to other tissues. 
Question: What delivers oxygen and nutrients to other tissues?
Example Output: Blood.

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

Example Input: Fact: When water's temperature drops to 32 degrees, it expands. 
Question: What happens when water's temperature drops to 32 degrees?
Example Output:
It expands.