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: That is all IT is ... beat the competition ... ' ' Naturally ... by co-operating in mutual enhancement ? '
Example Output: Changed

Example Input: " Was it your savages ? "
Example Output: Original

Example Input: After all that time , my crowning achievement was a rather mediocre canteen of Swan Lake .
Example Output:
Changed