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]: Behind a small gate lay a simple section of gray cobblestones .
[A]: Original


[Q]: The colors intertwined my head , and I wailed in agony .
[A]: Changed


[Q]: We have to purge ourselves from Rex 's dad and my parents .
[A]:
Changed