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.

Example Input: The hallway on the other side was empty , as I expected it to be , but I peered through the glass .
Example Output: Inversion

Example Input: He rested there , allowing me to accustom myself to his thickness , and then , when I lifted my hips , he began thrusting faster .
Example Output: Original

Example Input: I thought for a moment , and then the penny dropped .
Example Output:
Original