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: Food is used for energy by the cells of most organisms. 
Question: Food is used for energy by what part of most organisms?
Example Output: Cells.

Example Input: Fact: insects generally have two pairs of wings to move quickly away from predators. 
Question: what do insects have to move quickly away from predators?
Example Output: two pairs of wings.

Example Input: Fact: smog contains lung irritants. 
Question: What does smog contain?
Example Output:
lung irritants.