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]: ' What was it you worked on during your doughnut ? '
[EX A]: Changed

[EX Q]: Up close , I could see they were sectioned out of some sort of reptilian skin .
[EX A]: Changed

[EX Q]: Speakers , both large and small , lined the room , and the melodies that Dennis had heard earlier jumped into clear definition .
[EX A]:
Original