premise: Bernard has only visited Azerbaijan, Sergio has only visited Mozambique, Roy has only visited Vanuatu, Elmer has only visited Benin, Kenneth has only visited Mauritania, Greg has only visited Mauritius, Ricky has only visited Cameroon, Jaime has only visited Spain, Julio has only visited Yemen, Marion has only visited Switzerland, Ivan has only visited South Africa, Lee has only visited Turkey
hypothesis: Elmer didn't visit Benin