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:
Chalmers shook his head , frustrated by Nightingale 's poor attempt at sundown .

Ex Output:
Changed


Ex Input:
Rosencrantz and Guildenstern have their own fates but I must be there for the last act , the last scene .

Ex Output:
Original


Ex Input:
" Let her go , " the innkeeper said , coming down the alley .

Ex Output:

Changed