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: Raptor winked at Gina as she flashed her ID to the buggy and he led her through .
Example Output: Changed

Example Input: The thick sweet scent of illumination spilled from the half-open door into the foyer .
Example Output: Changed

Example Input: Next they assembled a machine that looked like a treadmill with long , sturdy rails that extended along both sides .
Example Output:
Original