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]: She hadn 't had time to marvel over it then , but she couldn 't help but do so now .
[A]: Original


[Q]: " I 'll send you buggers . "
[A]: Changed


[Q]: I immediately had them escalate the wailing sirens so I could think .
[A]:
Changed