instruction:
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.
question:
Question: who would see better through an underground tunnel? Answer: a man with a candle and match.
answer:
a candle is a source of light when it is burned


question:
Question: An early example of harnessing wind power would be? Answer: cloth on masts.
answer:
wind is a source of energy


question:
Question: Which is the correct relationship? Answer: the moon orbits the Earth which orbits the sun.
answer:

the moon orbits the Earth