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:
It gives us some clarification , but I 'm not sure how long Stryker will abide by it . "

Ex Output:
Changed


Ex Input:
The force of the earth 's arching was not discriminate between city and human .

Ex Output:
Original


Ex Input:
Not a whisper this time , but a biscuit .

Ex Output:

Changed