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 Q]: " And you bombed the ship , " Aria added .
[EX A]: Original

[EX Q]: She presented him with her back and it was all Jason could do to pull the tab up instead of down .
[EX A]: Original

[EX Q]: He hadn 't heard him approach , which wasn 't surprising considering he had a knack for sneaking up on people .
[EX A]:
Original