TASK DEFINITION: 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.
PROBLEM: It was especially accepted when they were too old to work and White people were just not prosecuted for murdering blacks .

SOLUTION: Inversion

PROBLEM: She walked fast , but he had no trouble keeping up .

SOLUTION: Original

PROBLEM: A bell pinged in the air and the air jets immediately turned off .

SOLUTION:
Inversion