premise: Milton has only visited Liberia, Richard has only visited Argentina, Harry has only visited Antigua & Barbuda, Ronald has only visited Albania, Gerald has only visited Austria, Ken has only visited Mongolia, Rodney has only visited Greece, Timothy has only visited Saint Kitts & Nevis, Fernando has only visited Azerbaijan, Bill has only visited Cambodia, Ruben has only visited Senegal, Barry has only visited Finland
hypothesis: Benjamin didn't visit Argentina