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: multicellular organisms have many organelles. 
Question: what do multicellular organisms have many of?
Example Output: organelles.

Example Input: Fact: Breathing provides one substance transported by the blood. 
Question: What process provides one substance transported by the blood?
Example Output: breathing.

Example Input: Fact: Blowing oxygen into a whistle causes oxygen to vibrate inside the whistle. 
Question: If you blow oxygen inside of a whistle, what will vibrate inside of the whistle?
Example Output:
oxygen.