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: With a waved arm , he ensures that I should step towards one of the doors towards the back of the room .

A: Changed
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Q: " No , just some minor issues with the presidency .

A: Changed
****
Q: It was on a swivel base , operated by a crank at the left-hand side .

A:
Original
****