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 surfer caught the wave, so it wasn't a problem at all
not plausible

The boy turned the lid on the jar, so he couldn't do anything about it
not plausible

I scratched my skin, so I thought I'd give this a try

not plausible