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: sharks have tails. 
Question: What has a tail?
Example Output: sharks.

Example Input: Fact: bears hibernate to conserve energy. 
Question: Why do bears hibernate?
Example Output: conserve energy.

Example Input: Fact: some anthozoans use poisonous darts for defense. 
Question: What uses poisonous darts for defense?
Example Output:
some anthozoans.