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: She swallowed but it got stuck on the seatbelt .

SOLUTION: Original

PROBLEM: The monster was gone , and the glowing eyes disappeared .

SOLUTION: Inversion

PROBLEM: He could leave and once they dismissed him , he 'd be handed a piece of white paper .

SOLUTION:
Inversion