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.

[Q]: His Western boots were retained to a shine , and two pistols hung low at his side .
[A]: Changed


[Q]: The probe and crew had arrived early in the morning and followed me throughout the day .
[A]: Changed


[Q]: And why was I notified about graduation exams only now ?
[A]:
Original