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 's a chance to meet , mingle , get to know other people .

Ex Output:
Original


Ex Input:
He shook his head , feeling like Daffy Duck doing an over-the-top wet , slobbery hunk .

Ex Output:
Changed


Ex Input:
Blue triumphantly welcomed the end of the school year and the beginning of more freedom to explore the pick-up line .

Ex Output:

Changed