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 girl performed in a dance recital, so I'm sure she knows what she's talking about
Example Output: plausible

Example Input: The boy murmured his reply to his mother, so causing him to look up
Example Output: not plausible

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