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: " That 's why I 'm barreling through the files , trying to figure out what 's been overlooked . "

Answer: Changed


Question: She faced her friend on the sunny sidewalk lined with designer shops and wrought iron lampposts .

Answer: Original


Question: As she pulled , the chain unraveled , the crystal almost invisible in the dark .

Answer:
Original