premise: Ruben has only visited Liberia, Gilbert has only visited Eswatini, Theodore has only visited Algeria, Nathan has only visited Bulgaria, Manuel has only visited Sudan, Jon has only visited Democratic Republic of the Congo, Darrell has only visited Suriname, Bill has only visited Dominican Republic, Kenneth has only visited Paraguay, Edwin has only visited Vatican City, Dean has only visited Austria, Karl has only visited Benin
hypothesis: Christian didn't visit Suriname