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: There is an odd undertone of fear in her voice , which piques my curiosity and concern .
Example Output: Original

Example Input: Mr. Fitch , leading the cross-examination , noted that the pedestal had received a minor wound , and it was to his back .
Example Output: Changed

Example Input: " Ron is not a workaholic . "
Example Output:
Changed