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]: Noah kept his hold on Claire as he waited for Gwen to drop another binder .
[A]: Changed


[Q]: " We need to do our human testing , don 't want to have any more deliveries by waiting for vaccination of a test subject .
[A]: Changed


[Q]: I had never seen nor heard of a Scorpion as large as the one I was tiring .
[A]:
Changed