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: the heart stopping pumping can cut off oxygen to cells. 
Question: What can cut off the oxygen to cells?
Example Output: the heart stopping.

Example Input: Fact: Playing is one of many ways animal improve ability to survive and thrive. 
Question: Playing is one of many ways animal improve ability to what?
Example Output: survive.

Example Input: Fact: Mosses depend on moisture to reproduce. 
Question: What requires moisture to reproduce?
Example Output:
Mosses.