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: With a waved arm , he ensures that I should step towards one of the doors towards the back of the room .

Answer: Changed


Question: Up close , I could see they were sectioned out of some sort of reptilian skin .

Answer: Changed


Question: If it stays down , it goes down with thanks -- that 's my BlackBerry . "

Answer:
Changed