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 the question was not answered
not plausible

I received a package in the mail, so i thought i would give it a try
plausible

The girl was angry with her friend, so she didn't say anything to him

plausible