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]: Was she doing Cammie and Travis a huge disservice by not staying and allowing Donovan to bring a doctor in for Cammie ?
[A]: Original


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


[Q]: He had to improvise something quickly when we stayed behind .
[A]:
Original