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: gases from burning coal causes precipitation which pH is 5.7 or lower. 
Question: Gases from what causes precipitation where the pH is 5.7 or lower?
Example Output: burning coal.

Example Input: Fact: Amphibians have a larynx to make sounds. 
Question: What do amphibians use to make sounds?
Example Output: Voice box.

Example Input: Fact: a hemisphere receives less sunlight when it points away. 
Question: What does a planet receive more of when it is tilted?
Example Output:
light.