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 authorities vowed to protect the identity of the crime victim, so they withheld the victim's name from the public
Example Output: plausible

Example Input: The girl came across an unfamiliar word in her textbook, so she explained it to him
Example Output: not plausible

Example Input: I clumsily bumped into the stranger, so I had to check it out
Example Output:
not plausible