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]: He was about to blot on the greatest adventure of his life .
[A]: Changed


[Q]: I resigned , and later I turned in a report to the FDA with all this documentation . "
[A]: Original


[Q]: Reuben could smell the pitch or the helix of the torch , he didn 't know for sure which it was .
[A]:
Changed