In this task, you will be given two sentences separated by ", so". You should decide whether the first sentence can be the cause of the second sentence. If you can see a possible causation, answer with "plausible", otherwise answer with "not plausible".

Example Input: The pond froze over for the winter, so there was plenty of rain
Example Output: not plausible

Example Input: The motorcyclist twisted the throttle, so causing the motorcycle to overturn
Example Output: plausible

Example Input: The surfer caught the wave, so we didn't have to wait long
Example Output:
not plausible