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: I held the door for the woman entering behind me, so she didn't have to see me
Example Output: not plausible

Example Input: The man was lost, so he was brought in to help
Example Output: not plausible

Example Input: The clock stopped ticking, so I could get a good look at what was going on
Example Output:
plausible