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]: There were no streetlights , so there was damn little to see and no landmarks she could describe to someone else .
[A]: Original


[Q]: He used to spend hours perfecting the old books . "
[A]: Changed


[Q]: " I don 't have pneumonia .
[A]:
Original