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: John closed the trapdoor behind us , and once in the dark I heaved a sigh .

SOLUTION: Original

PROBLEM: I skewered him with a glare and his eyes came back to mine .

SOLUTION: Inversion

PROBLEM: Luke stopped him with a hand on his arm , but he half turned to climb back into his car .

SOLUTION:
Inversion