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 boaters set off a flare, so we didn't have to wait long
plausible

I tipped the bottle, so the liquid in the bottle froze
not plausible

The man slid the razor across his chin, so he could see it again

not plausible