In this task you are given a sentence with one coordinating conjunction (for, and, nor, but, or, yet, and so). You must judge whether the order of two coordinated clausal conjoints have been inverted or not. Inversion would result in the sentence sounding unnatural. Label the instances as "Original" or "Inversion" based on your judgment.

His face darkened for a brief second , and Jax looked up at me swiftly .
Inversion

His face fell and he sat down .
Original

Fear was the main emotion I saw , but glancing over at him , there was a little bit of excitement on his face .

Inversion