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: Forests are being hurt by the color of an environment from changing green to brown. 
Question: What is hurt when the environment changes from green to brown?
Example Output: forests.

Example Input: Fact: Migrants usually travel between two places fa away from each other. 
Question: What do migrants usually do?
Example Output:
travel to a far away place.