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 tripped on one of those grenades you were talking about , " Daniel said .

A: Changed
****
Q: Like in our own little payback . "

A: Changed
****
Q: They were the keepers of history ; they were supposed to know about everything .

A:
Original
****