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: The grounds were fenced , and wolves ran loose within the compound .

SOLUTION: Original

PROBLEM: I stepped from my underwear and he stood as his boxers came off .

SOLUTION: Original

PROBLEM: Only the main walls of the basic structure were unchanged , and it 'd been remodeled .

SOLUTION:
Inversion