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: breathing is when fish convert from oxygen in water to oxygen in blood. 
Question: When fish convert oxygen in water to oxygen in blood this is called?

Output: breathing.


Input: Consider Input: Fact: hairy animals nourish young with milk. 
Question: How to mammals nourish young?

Output: milk.


Input: Consider Input: Fact: Electric devices require the flow of electrons. 
Question: What uses the flow of electrons?


Output: Electric devices.