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".

The authorities vowed to protect the identity of the crime victim, so they did the next best thing
plausible

Several witnesses of the crime testified against the suspect, so resulting in a four-year prison sentence
plausible

The surfer caught the wave, so causing the ship to flip over

not plausible