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 tenant misplaced his keys to his apartment, so he couldn't call for help
Example Output: plausible

Example Input: I finished a page of the book, so be sure to check it out
Example Output: plausible

Example Input: I clumsily bumped into the stranger, so causing him to fall to the floor
Example Output:
plausible