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 was lost, so he was brought in to help
not plausible

The teacher took roll, so she could get a better understanding of what was going on in the classroom
plausible

The teacher caught the student chewing gum, so it was a no brainer

not plausible