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]: Now , more then ever , she was determined not to shirk her class work .
[EX A]: Original

[EX Q]: I 've roped them all in and they can 't get away ! "
[EX A]: Original

[EX Q]: Tom and I raked over the numbers , and I tried to memorize as much of the necessary data as possible .
[EX A]:
Original