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: cloning is the process of isolating and making copies of a unit of heredity. 
Question: What is the process of isolating and making copies of a unit of heredity?
Example Output: cloning.

Example Input: Fact: prokaryotes can make proteins. 
Question: what can make proteins?
Example Output: prokaryotes.

Example Input: Fact: mammals can generate heat by depleting energy stores. 
Question: How can mammals generate heat?
Example Output:
Depleting energy stores.