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: I really hadn 't given him a reason to not believe me but he obviously wasn 't buying it .

SOLUTION: Inversion

PROBLEM: They 'd barely spoken to each other - and it was because they had nothing in common except the child she carried .

SOLUTION: Original

PROBLEM: They executed it well , and they had this planned very well .

SOLUTION:
Inversion