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: He 's a brave kid , " John replied , slurping up some of his stew .
Example Output: Original

Example Input: " Okay , maybe a thousand , " the man said quickly , backtracking .
Example Output: Original

Example Input: Daemon and Archer wasted no time perfecting .
Example Output:
Changed