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]: " What about your sciences ? "
[EX A]: Changed

[EX Q]: Angelica focused on her fingers , playing with a loose thread on the coverlet .
[EX A]: Original

[EX Q]: " Nevertheless , Steve , we and the pirates are still at war , " declared the ninja .
[EX A]:
Original