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: Ian , with his Bug eyes , had invited me to visit him in St. Louis .
Example Output: Changed

Example Input: That wasn 't to say Rose wasn 't a sucker for interrogations .
Example Output: Changed

Example Input: For some reason , the event brought on memories that I had long since buried deep under mountains of self-loathing and carefully orchestrated checks and balances .
Example Output:
Original