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 returned every lick , every nip .

Ex Output:
Original


Ex Input:
" Okay , maybe a thousand , " the man said quickly , backtracking .

Ex Output:
Original


Ex Input:
" They 're under tremendous pressure right now - pressure from their banks and their helplessness .

Ex Output:

Changed