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]: You 'd catch them at recess in places they knew they were not allowed to be .
[A]: Original


[Q]: Talk with him about a merger .
[A]: Original


[Q]: Perhaps there are periods of unconsciousness , but what can it matter if I can 't find refuge in them ?
[A]:
Original