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: I opened my eyes and saw the woman retching onto the floor .

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

A: Changed
****
Q: Regan had done a good job getting reinforcements to Kostas 's warehouse , but now they needed a full-out strategy .

A:
Original
****