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.

Q: J.C. gave me a big streetlight and a grin .

A: Changed
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Q: I can 't help but notice the drafts that get into a room .

A: Original
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Q: Free burgers had been a great perk .

A:
Original
****