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: You get seriously unhinged . "

SOLUTION: Changed

PROBLEM: I am not preaching , and Heaven knows I do not pretend to be better than anyone else .

SOLUTION: Original

PROBLEM: He turns and walks away , doubling back down onto the chair .

SOLUTION:
Changed