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: It was extremely rare to begin with , but not only that , it wasn 't the right time or place to be occurring .

A: Original
****
Q: El Cid was a cog in the wheel , fighting between Christians and Muslims who serve the same deity .

A: Original
****
Q: But I did not fall quite into the gulf .

A:
Original
****