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.

[EX Q]: He never went commando , hiking , climbing , or anything like that in the mountains .
[EX A]: Changed

[EX Q]: Catherine , who was listening to the physician 's dire prognosis , jumped up from her chair and dashed for the door of the chamber .
[EX A]: Original

[EX Q]: " Yes , Siren , look at what your so-called superiors did to an innocent young girl . "
[EX A]:
Changed