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: Bacteria can cause food to spoil. 
Question: What causes food to spoil?

A: Bacteria.
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Q: Fact: waves can be used to produce electricity. 
Question: What can be used to produce electricity?

A: waves.
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Q: Fact: If pee leaves the body through a sphincter infrequently it will be dark yellow. 
Question: If pee doesn't leave the body through a sphincter very often what color will it be?

A:
dark yellow.
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