Given the task definition, example input & output, solve the new input case.
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: The woman went to the bank, so pigs can fly.
Output: not plausible
Clearly, there can't be a causation relationship between someone going to the bank and pigs flying.

New input case for you: The offender violated parole, so he was forced to go back in
Output:
plausible