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


[Q]: " But - " I dialed another informant and initiated a similar , but more circumspect , line of inquiry .
[A]: Original


[Q]: " They 're charging at us ... " Robert says as he places the segment of his rifle and aims ahead .
[A]:
Changed