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]: A slight smile appeared as he moved around the bag , targeting different sides with different hand techniques .
[EX A]: Original

[EX Q]: That 's what life 's all about , isn 't it , luv ? "
[EX A]: Original

[EX Q]: The stiffness in her arms made the simple tasks a study in soreness but her mind was elsewhere .
[EX A]:
Original