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]: " Is that what the markings do , give people physical and mental cores ?
[EX A]: Changed

[EX Q]: She sat at the workstation and entered her co-workers on the screen .
[EX A]: Changed

[EX Q]: Michael looked at her , and Claire 's stomach did a little flip at the coverage in his expression .
[EX A]:
Changed