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 am not preaching , and Heaven knows I do not pretend to be better than anyone else .
[EX A]: Original

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

[EX Q]: Dirty fingers reached to snag pieces of the fragrant prizes as the servants pushed through the teeming crowds .
[EX A]:
Original