premise: Jon has only visited Nauru, Sergio has only visited Togo, Freddie has only visited Côte D'ivore, Dustin has only visited Sudan, Jeff has only visited Zambia, Jose has only visited Cameroon, Phillip has only visited Liechtenstein, Sidney has only visited Brunei, Jimmie has only visited Czech Republic, Franklin has only visited Serbia, Daniel has only visited Eswatini, Gary has only visited Mauritius
hypothesis: Phillip didn't visit Tanzania