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: Now he knew that he wasn 't , but he thought he was .

SOLUTION: Inversion

PROBLEM: Serena gasped and before he knew her intention she slapped him across the jaw .

SOLUTION: Original

PROBLEM: My stomach flips over and he winks at me .

SOLUTION:
Inversion