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.
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Question: Angelica focused on her fingers , playing with a loose thread on the coverlet .

Answer: Original


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

Answer: Original


Question: " Apparently there are several large lakes , an extensive escarpment , an impressive waterfall and -- " " Yes , Niagara Falls , " I said .

Answer:
Original