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 doorbell converts  kinetic  energy into sound. 
Question: A doorbell converts _ into sound?

Output: kinetic energy.


Input: Consider Input: Fact: erosion forms canyons. 
Question: What are formed by erosion?

Output: canyons.


Input: Consider Input: Fact: a graduated cylinder is used to measure how much space a liquid takes up. 
Question: What is used to measure how much space a liquid takes up?


Output: a graduated cylinder.