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: It wasn 't a nice smile , and he smiled then .
Example Output: Inversion

Example Input: Serena gasped and before he knew her intention she slapped him across the jaw .
Example Output: Original

Example Input: Mike wanted to be where the action was , not holed up in an office , and he strode out to join them .
Example Output:
Original