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.

[EX Q]: Fact: moist air falls on the windward side of a mountain. 
Question: Where does moist air fall on a mountain?
[EX A]: windward side.

[EX Q]: Fact: waves can be used to produce electricity. 
Question: What can be used to produce electricity?
[EX A]: waves.

[EX Q]: Fact: Tiny ocean organisms feed on phytoplankton. 
Question: What ocean organisms feed on phytoplankton?
[EX A]:
tiny.