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.

Input: Consider Input: Fact: a drum has a vibrating movement. 
Question: what has vibrating movement?

Output: drum.


Input: Consider Input: Fact: animals use sound to find a mate. 
Question: What do animals use to find a mate?

Output: sound.


Input: Consider Input: Fact: some fish without internal hard tissues secrete large amounts of thick, slimy mucus. 
Question: What can have no internal hard tissues and secrete large amounts of thick, slimy mucus?


Output: some fish.