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 contemplated the painting, so he decided to give it a try
plausible

The tenant misplaced his keys to his apartment, so he left the door open
plausible

I finished a page of the book, so I thought I'd put it up here

plausible