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 grape juice fermented, so I opted for the red wine
plausible

The driver rotated the steering wheel, so there was no problem with the drive
plausible

I held the door for the woman entering behind me, so she couldn't get out

not plausible