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.

Ex Input:
Fact: humans use lipids to store energy. 
Question: what uses lipids to store energy?

Ex Output:
humans.


Ex Input:
Fact: water flow through soil is variable. 
Question: What is the rate of water flow of soil?

Ex Output:
variable.


Ex Input:
Fact: an organism requires something that comes from food for growth. 
Question: An organism needs what to grow?

Ex Output:

Food.