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]: An advance on his grenades was what he wanted so he had said .
[EX A]: Changed

[EX Q]: I regret confronting this burden on one so young , but you are the most likely to succeed .
[EX A]: Changed

[EX Q]: And that would only negate what he was about to do .
[EX A]:
Original