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: It should have opened then , but it didn 't .

SOLUTION: Original

PROBLEM: The old folks blocked Jonah 's view , but he figured it had to be Dean .

SOLUTION: Original

PROBLEM: He had the sinking feeling that his luck was running out , but maybe it was irrational , maybe he was superstitious .

SOLUTION:
Inversion