premise: Henry has only visited Solomon Islands, Clinton has only visited Marshall Islands, Chester has only visited Kiribati, Jared has only visited Antigua & Barbuda, Seth has only visited Equatorial Guinea, Leo has only visited Timor-Leste, Steve has only visited Singapore, Gordon has only visited Iran, Julio has only visited Kuwait, Andy has only visited Guinea, Arthur has only visited Austria
hypothesis: Leo didn't visit Seychelles