premise: Dave has only visited Morocco, Aaron has only visited United States, Corey has only visited Niger, Walter has only visited Côte D'ivore, Lonnie has only visited Sweden, Armando has only visited Germany, Randy has only visited Italy, Victor has only visited Philippines, Steven has only visited Nigeria, Tyrone has only visited Tonga, Ramon has only visited Albania, Rene has only visited Vatican City
hypothesis: Randy didn't visit Italy