premise: Neil has only visited Venezuela, Mitchell has only visited Burkina, Dustin has only visited Djibouti, Everett has only visited The Bahamas, Darryl has only visited Mexico, Joe has only visited Rwanda, Willard has only visited São Tomé & Prícipe, Elmer has only visited Libya, Marvin has only visited Serbia, Bob has only visited Timor-Leste, Tom has only visited South Sudan
hypothesis: Mitchell didn't visit Burkina