In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.

Q: Question: who would see better through an underground tunnel? Answer: a man with a candle and match.

A: a candle is a source of light when it is burned
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Q: Question: Decomposition? Answer: adds to the components needed to sustain life in the soil.

A: decomposition increases the amount of nutrients in the soil
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Q: Question: Paper suitable for recycling is often used to produce? Answer: cellulose nanofibers.

A:
paper is recyclable
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