premise: Daryl has only visited Bosnia & Herzegovinia, Jesse has only visited Seychelles, Chris has only visited Oman, Bobby has only visited Samoa, Elmer has only visited Palestine, Marcus has only visited Guinea, Marc has only visited Austria, Billy has only visited El Salvador, Joshua has only visited Fiji, Derek has only visited The Bahamas, Leroy has only visited Italy, Martin has only visited Jamaica
hypothesis: Derek didn't visit The Bahamas