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]: " They 've registered the hull breach and they send breezes to investigate .
[EX A]: Changed

[EX Q]: They 'll be haunted for the rest of their lives by your hacking .
[EX A]: Changed

[EX Q]: This stimulus means a lot to me .
[EX A]:
Changed