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.

I lifted my shirt , revealing two deep gouges in my chest with blood gushing out .
Changed

He stilled , his muscles cramping from strain .
Changed

They stepped out from under the opener and exchanged a terrified glance .

Changed