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 doorbell rang and she went to answer it .

SOLUTION: Original

PROBLEM: We left his room , and Jonah grabbed up keys .

SOLUTION: Inversion

PROBLEM: His concern warmed me , but at the same time , I was impatient .

SOLUTION:
Original