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.

Ex Input:
He had to be proactive , because being reactive would only end up in chaos , arrests , and more shit than he wanted to deal with .

Ex Output:
Original


Ex Input:
The spire of white and crystal crumbled to the ground , casting clouds of choking dust in every direction .

Ex Output:
Original


Ex Input:
I don 't need that kind of complication in my life . "

Ex Output:

Original