instruction:
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.
question:
Fact: when a lake receives too much water, a flood occurs. 
Question: When does a flood occur in a lake?
answer:
after too much water received.


question:
Fact: Burning fuel in furnaces can kill. 
Question: Burning fuel in a furnace can?
answer:
kill.


question:
Fact: coal is used to produce electricity by burning in inherently modular stations. 
Question: coal is used to produce electricity by burning in inherently modular what?
answer:

stations.