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: When heat passes through metal, that metal expands. 
Question: What happens to metal when heat passes through it?
Example Output: It expands.

Example Input: Fact: Bacteria causes food to be thrown out. 
Question: Bacteria causes food to be what?
Example Output: thrown out.

Example Input: Fact: vomiting reflex is used to remove lead from the stomach. 
Question: What is used to remove lead from the stomach?
Example Output:
Vomiting reflex.