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: Eggert carefully unlocked her office and they stepped inside .
Example Output: Original

Example Input: John closed the trapdoor behind us , and once in the dark I heaved a sigh .
Example Output: Original

Example Input: He 'd pulled away again , and she didn 't know why .
Example Output:
Original