premise: Lewis has only visited South Korea, Calvin has only visited Papua New Guinea, Chester has only visited Malaysia, Wallace has only visited Laos, Maurice has only visited Libya, Eugene has only visited Mozambique, Charlie has only visited Liberia, Jordan has only visited São Tomé & Prícipe, Isaac has only visited Lithuania, Javier has only visited Azerbaijan, Pedro has only visited Sweden
hypothesis: Jordan didn't visit São Tomé & Prícipe