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".
--------
Question: I was confused by the professor's lecture, so I took a deep breath

Answer: plausible


Question: The man became disabled, so he was brought in to help

Answer: not plausible


Question: I rubbed sandpaper on the wood, so I had to take the plunge

Answer:
not plausible