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: On Nick 's plate were pie and cookies , next to it sat a tall vanilla milkshake .

SOLUTION: Original

PROBLEM: I really shouldn 't have provoked her like that .

SOLUTION: Original

PROBLEM: There was a lipstick smudge on it that baffled her until she remembered the lip print on the Plexiglas in the visitor 's cubicle .

SOLUTION:
Original