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.

Input: Consider Input: The doors opened , and the elevator stopped .

Output: Inversion


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

Output: Original


Input: Consider Input: He wasn 't hurting me , but he could at any moment .


Output: Original