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]: You gon na jack up the prices on the drugs you sell ?
[A]: Original


[Q]: A fog bank began to seep onto the street , hovering a foot above the ground .
[A]: Original


[Q]: ' They 're coming west in bikinis , pretending to be interested in trade .
[A]:
Changed