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.

[Q]: Fact: if soil is permeable then h2o easily flows through the soil. 
Question: what flows with ease through soil if it's permeable?
[A]: h2o.


[Q]: Fact: Fanning a fire helps it to continue burning. 
Question: What can help a fire to continue burning?
[A]: Fanning it.


[Q]: Fact: quartz or nickel plated aluminum are used for reflecting light. 
Question: what are used for reflecting light?
[A]:
quart or nickel plated aluminum.