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 papers were disorganized, so there was nothing I could do
Example Output: plausible

Example Input: I rubbed sandpaper on the wood, so it didn't rust
Example Output:
not plausible