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:
Collecting secret information , surveillance , unarmed combat , shooting , blackmail , sabotage , contractor , jungle survival -- bah !

Ex Output:
Changed


Ex Input:
" Thanks warden . "

Ex Output:
Original


Ex Input:
" Yes , but maybe she disobeyed Sebastian in front of him .

Ex Output:

Changed