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 man slid the razor across his chin, so he couldn't see his face
not plausible

The boaters set off a flare, so caused the boat to sink
not plausible

A burglar broke into the house, so it had to be washed

not plausible