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".
--------
Question: I scratched my skin, so I thought I'd give this a try

Answer: not plausible


Question: My foot went numb, so causing me to fall to the floor

Answer: plausible


Question: The man signed the document, so it must have been the case

Answer:
not plausible