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.

Serena gasped and before he knew her intention she slapped him across the jaw .
Original

She shook her head , but the appreciation on his face made the breath catch in her throat .
Inversion

Her hand immediately flies to her mouth and MacKenzie flips the little black box open .

Inversion