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: Another sniff made her change her mind , but at least she 'd see where she was if she found the roof , she reasoned .

SOLUTION: Inversion

PROBLEM: His expression was still inscrutable , but she saw that her words troubled him .

SOLUTION: Original

PROBLEM: Though the kiss was brief , he breathed in the scent of her , and she stiffened as his mouth touched her skin .

SOLUTION:
Inversion