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 terrorist set off the bomb, so it was no big deal
not plausible

The baby was wailing in his crib, so he got up and opened it
not plausible

The grape juice fermented, so I didn't worry about it

not plausible