instruction:
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.
question:
A few nasty comments burrowed into my shortcomings as I walked out of the tunnel and into the night air .
answer:
Changed


question:
He chugs the full content in one go while I stand rigidly , fuming .
answer:
Original


question:
It was a technique already being investigated using chemicals , specifically propranolol as a beta-blocker to erase especially strong memories of trauma .
answer:

Original