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]: ' I 'm saying nothing that will grieve me . '
[EX A]: Changed

[EX Q]: Everyone was up by the time we got back , and most were already in their bathing suits and working on their tans .
[EX A]: Original

[EX Q]: Because of what I had seen the last two years , I knew mages were very real possibilities .
[EX A]:
Changed