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: And everything I have on this boat is covered with soot . "
Example Output: Original

Example Input: He removed small vials from grenades on the woman 's belt .
Example Output:
Changed