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: ' What was it you worked on during your doughnut ? '

A: Changed
****
Q: May I return to my harmless query ? "

A: Changed
****
Q: The representatives of more than a dozen countries around the world were brought to a huge soundstage to hear about the new coals .

A:
Changed
****