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.

Q: She sat at the workstation and entered her co-workers on the screen .

A: Changed
****
Q: My sorcery was weak here . "

A: Original
****
Q: " You think this is all a set-up , don 't you ?

A:
Original
****