TASK DEFINITION: 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.
PROBLEM: Your nightly search might be merely a manifestation of the stress of what happened to you that day .

SOLUTION: Original

PROBLEM: The only power they 'd held over him was that of testing the limits of his elevation .

SOLUTION: Changed

PROBLEM: He 'll mess up the credenza and my life .

SOLUTION:
Changed