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: He wasn 't certain why it would be , and catching the glimpse of another man in her mind had been a shock .
Example Output: Inversion

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

Example Input: Sam was very surprised when she 'd found it among the things they sent , but then she 'd realized that she shouldn 't be .
Example Output:
Original