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: An advance on his grenades was what he wanted so he had said .

SOLUTION: Changed

PROBLEM: " It sounds like you are very anxious to grow up , " Jason observes .

SOLUTION: Original

PROBLEM: I look out of the door and see Ben running down the street ; the zombies have begun to follow , slowly shambling after him .

SOLUTION:
Original