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.

Input: Consider Input: Fact: large animals that roamed the earth were replaced with mammals after their extinction. 
Question: large animals that roamed the earth were replaced with what after their extinction?

Output: mammals.


Input: Consider Input: Fact: water flow through soil is variable. 
Question: What is the rate of water flow of soil?

Output: variable.


Input: Consider Input: Fact: Furnaces and other devices that burn fuel are health hazards. 
Question: What are the affects of burning fuel on human health?


Output: They are a hazard.