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:
" Con , " Hale filled in .

Ex Output:
Original


Ex Input:
She sat at the workstation and entered her co-workers on the screen .

Ex Output:
Changed


Ex Input:
No strategy , no tact ; without the element of surprise he had not been much of a hit man at all .

Ex Output:

Original