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".

Example Input: The man looked at his watch, so he realized he forgot something
Example Output: not plausible

Example Input: My foot went numb, so i shook my foot
Example Output: plausible

Example Input: The archeologist dug up the site, so I went to check it out
Example Output:
plausible