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".

Ex Input:
The girl came across an unfamiliar word in her textbook, so she explained it to him

Ex Output:
not plausible


Ex Input:
The grape juice fermented, so I decided not to drink it

Ex Output:
plausible


Ex Input:
I tossed the ball upwards, so it was a good thing

Ex Output:

plausible