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: A slight smile appeared as he moved around the bag , targeting different sides with different hand techniques .
Example Output: Original

Example Input: All week he 'd wormed his will not to go near the girl .
Example Output: Changed

Example Input: Stacy did so , admitting she 'd probably brought this on herself by telling him his masseuse had not turned her on .
Example Output:
Original