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:
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:
But do not stand in the way of my classmate .

Ex Output:
Changed


Ex Input:
Ultimately , he set both cup and trudge down on the desk , telling himself it needed to cool .

Ex Output:

Changed