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: An object that is stopped is? Answer: halted.

A: stopped means no speed
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Q: Question: A seismometer would be ineffective? Answer: on a star.

A: a seismometer is used to measure the strength or magnitude of an earthquake
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Q: Question: How long did it take the Grand Canyon to form? A? Answer: very lengthy amount of time.

A:
a canyon forming occurs over a period of millions of years
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