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:
Hector helped himself to a cracker with a swirled topping .

Ex Output:
Original


Ex Input:
He tapped on the overhead display to awaken it and then displayed a digital diagram .

Ex Output:
Original


Ex Input:
Sometimes I need a reminder that trampling over the innocent to do that isn 't the best way .

Ex Output:

Original