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.

Q: ' We 're at the end of the wharf , father .

A: Original
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Q: The spire of white and crystal crumbled to the ground , casting clouds of choking dust in every direction .

A: Original
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Q: " David Manning , " Ann skewered several times to herself .

A:
Changed
****