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: Then , grimacing , I altered my destination and turned the corner .
Example Output: Original

Example Input: I really shouldn 't have provoked her like that .
Example Output: Original

Example Input: She put her briefcase on the ground , opened it , produced a porn , took papers out , straightened , started reading .
Example Output:
Changed