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: Mineral graphite can pierce the skin surface. 
Question: What can pierce the skin surface?

A: Mineral graphite.
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Q: Fact: rivers can slowly dissolve carbon in sedimentary rock. 
Question: what can slowly dissolve carbon in sedimentary rock?

A: rivers.
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Q: Fact: Something in a fire alarm converts chemical energy into electrical energy. 
Question: What converts chemical energy into electrical energy?

A:
Something in a fire alarm.
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