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: Rosencrantz and Guildenstern have their own fates but I must be there for the last act , the last scene .
Example Output: Original

Example Input: I regret confronting this burden on one so young , but you are the most likely to succeed .
Example Output: Changed

Example Input: " Bugger off , " I snapped .
Example Output:
Original