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.

Her breathing was returning to normal , but she wasn 't ready to stop dreaming yet .
Original

The halls were still covered in debris , but most of it was being cleaned up .
Original

The lights went dark and the engine shut off .

Inversion