premise: Reginald has only visited Iceland, Luis has only visited Nauru, Edgar has only visited Cuba, Henry has only visited Palestine, Tom has only visited Ecuador, Cecil has only visited El Salvador, Donald has only visited Djibouti, Philip has only visited Algeria, Marc has only visited Philippines, Dennis has only visited North Korea, Jerry has only visited Pakistan, Nathaniel has only visited Sierra Leone
hypothesis: Donald didn't visit Djibouti