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 bureau drawers were cluttered, so I decided to leave them out
not plausible

The authorities vowed to protect the identity of the crime victim, so they decided to leave
not plausible

I tossed the ball upwards, so you could see my face

not plausible