TASK DEFINITION: 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".
PROBLEM: I stood on one foot, so he could look down at me

SOLUTION: not plausible

PROBLEM: The grape juice fermented, so there was no need to add more

SOLUTION: not plausible

PROBLEM: It got dark outside, so it was nice and dark

SOLUTION:
plausible