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: " There is no great-aunt , " Mat said with exasperation .
Example Output: Original

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

Example Input: He staggered to his feet after deflecting yet another blow and prepared to launch himself directly at his enemy .
Example Output:
Original