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: barometric pressure makes clear weather. 
Question: What causes clear weather?
Example Output: barometric pressure.

Example Input: Fact: living things cannot survive without oxygen. 
Question: what cannot survive without oxygen?
Example Output: living things.

Example Input: Fact: Oxygen is just one substance transported through our veins. 
Question: Oxygen is just one substance transported through our what?
Example Output:
veins.