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.

Humans outnumber us , Sali , and it confuses things .
Original

And he added , " We all know you 're fast with the ravine . "
Changed

Her body undulated as she came , her knees giving way even as she fought to stay upright .
Original