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: Ozone depletion increases the risk of getting skin cancer. 
Question: What increases the risk of getting skin cancer?
Example Output: Ozone depletion.

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: Tadpoles undergo metamorphosis. 
Question: Which animal undergoes metamorphosis?
Example Output:
Tadpole.