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: And he added , " We all know you 're fast with the ravine . "
Example Output: Changed

Example Input: Sticks nodded to his fellow traveller .
Example Output:
Changed