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.

Q: Fortunately , Paul 's fridge was full of fresh lettuce , tomatoes , coolers , and mushrooms .

A: Changed
****
Q: I replied with a smiling face , it was a common thing among us ; replying a question with another .

A: Original
****
Q: They were hard to read compared with digital notebooks .

A:
Changed
****