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 pond froze over for the winter, so people brought boats to the pond
not plausible

A man cut in front of me in the long line, so i smiled at him
plausible

The woman felt ashamed of scar on her face, so she pretended to be inside

plausible