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]: You 've certainly learnt a lesson , the submarine will be very interested in you . "
[EX A]: Changed

[EX Q]: For the last couple of hours , she had stayed locked in her office , scouring the internet .
[EX A]: Original

[EX Q]: " What about radios , " Collins asked , " There 's a chance they might get some satellites back online . "
[EX A]:
Original