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.

It pushed me over the edge , and my mom 's laugh carried up the stairs .
Inversion

The front door to his suite had opened and she 'd assumed it must be the maid .
Original

She put a ball into it instead , and I held out my hand to shake .

Inversion