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: ' We 're at the end of the wharf , father .
Example Output: Original

Example Input: And then they headed out the door , taking a preference to the locker rooms .
Example Output: Changed

Example Input: Keri approached the group , grabbing four weights .
Example Output:
Changed