premise: Ralph has only visited Panama, Kurt has only visited Macedonia, Anthony has only visited Uzbekistan, Tim has only visited Dominica, Fernando has only visited El Salvador, Daryl has only visited Belize, Oscar has only visited Togo, Marc has only visited Gabon, Marcus has only visited Bahrain, Bradley has only visited Central African Republic, Shawn has only visited Guinea-Bissau, Lloyd has only visited Saint Vincent & the Grenadines
hypothesis: Bradley didn't visit Nicaragua