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: warblers are nocturnal and travel long distances at night. 
Question: What are nocturnal and travel long distances at night?

Output: warblers.


Input: Consider Input: Fact: a doorbell converts  kinetic  energy into sound. 
Question: A doorbell converts _ into sound?

Output: kinetic energy.


Input: Consider Input: Fact: Cephalopods have a complex nervous system. 
Question: What has a complex nervous system?


Output: Cephalopods.