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:
A fog bank began to seep onto the street , hovering a foot above the ground .

Ex Output:
Original


Ex Input:
There must have been two hundred lakes and our unit was only forty , so the only thing we could have done was die alongside the others .

Ex Output:
Changed


Ex Input:
Too often , she found herself screaming out , wrenching herself from sleep as the nightmare invaded her dreams .

Ex Output:

Original