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.

To make matters worse she seemed to be losing her mind , and she had failed her brother .
Inversion

Mexico threatened half a dozen nations in South America and when I started , Belize was in ruins .
Inversion

There were about fifty students in the class , and she hadn 't spoken up during his lecture .

Inversion