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 Q]: Fact: food contains organic molecules. 
Question: What does food contain?
[EX A]: Organic molecules.

[EX Q]: Fact: Most invertebrates have brains capable of learning. 
Question: Most invertebrates have brains capable of what?
[EX A]: learning.

[EX Q]: Fact: An invasion of the body by bacteria can cause body tissues to swell. 
Question: An invasion of bacteria on the body can cause body tissue to do what?
[EX A]:
swell.