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 doctor x-rayed the patient's arm, so he knew what to do
Example Output: plausible

Example Input: The bureau drawers were cluttered, so I decided to leave them out
Example Output: not plausible

Example Input: The tenant misplaced his keys to his apartment, so causing him to be late for work
Example Output:
plausible