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: They 're not in order , but all the pieces are there .

SOLUTION: Inversion

PROBLEM: The doors opened , and the elevator stopped .

SOLUTION: Inversion

PROBLEM: Her lips clamped shut and she silenced immediately .

SOLUTION:
Original