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: Reluctantly I unwrapped mine and stared at the first cheeseburger I 'd been allowed in months .

SOLUTION: Original

PROBLEM: Once more the cockroach climbed his stand .

SOLUTION: Changed

PROBLEM: The best she could tell , the guy had been unleashing her with blood .

SOLUTION:
Changed