premise: Eddie has only visited Palestine, Vernon has only visited Canada, Cecil has only visited São Tomé & Prícipe, Javier has only visited Haiti, Phillip has only visited Guyana, Benjamin has only visited Bosnia & Herzegovinia, Johnnie has only visited Nicaragua, Salvador has only visited Bhutan, Alfred has only visited Vietnam, Jessie has only visited Togo, Edgar has only visited Guatemala
hypothesis: Tony didn't visit Guyana