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: ' Hold quite still or I 'll gnaw you ! '
Example Output: Original

Example Input: " I knew that establishment was being filmed ; only a fool wouldn 't expect those rooms were videoed .
Example Output: Changed

Example Input: " I have another impressive statistic , " Mr. McKnight added .
Example Output:
Original