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: Gene flow occurs when individuals migrate. 
Question: Migration increases what?
Example Output: gene flow.

Example Input: Fact: Carbon may be stored in conglomerate rocks. 
Question: What type of rock can carbon be stored in?
Example Output: Conglomerate.

Example Input: Fact: Cold fronts cause lightning. 
Question: Cold fronts cause what?
Example Output:
lightning.