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.

Example Input: " Wear the club .
Example Output: Changed

Example Input: A few nasty comments burrowed into my shortcomings as I walked out of the tunnel and into the night air .
Example Output: Changed

Example Input: From his coat he pulled a silvery radiance , one end sharpened to a lethal point .
Example Output:
Changed