In this task, you are given a sentence. You must judge whether a single noun or verb has been replaced with another word with the same part of speech. The inversion would result in the sentence sounding unnatural, So unnatural sentences will be considered changed. Label the instances as "Original" or "Changed" based on your judgment.
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Question: He used to spend hours perfecting the old books . "

Answer: Changed


Question: And everything I have on this boat is covered with soot . "

Answer: Original


Question: Maybe he figured his threats and the knife he 'd brought would keep her cowed .

Answer:
Original