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 used to spend hours perfecting the old books . "

Ex Output:
Changed


Ex Input:
She hadn 't had time to marvel over it then , but she couldn 't help but do so now .

Ex Output:
Original


Ex Input:
Mason stands from the chair he was sitting on and spits , " I 'm getting out of here . "

Ex Output:

Changed