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: I wasn 't expecting so many , but Merrill warned me they might be there .
Example Output: Inversion

Example Input: I started up the engine and David asked as he closed my car door .
Example Output: Inversion

Example Input: The doors opened , and we stepped off .
Example Output:
Original