premise: Erik has only visited Colombia, Dan has only visited Equatorial Guinea, Mark has only visited Sudan, Ted has only visited Syria, Eddie has only visited Slovenia, Jorge has only visited Djibouti, Barry has only visited Uganda, Ivan has only visited Iceland, Sidney has only visited Belize, Hector has only visited Antigua & Barbuda, Louis has only visited Burkina, Gilbert has only visited Portugal
hypothesis: Tim didn't visit Colombia