premise: Jesse has only visited Timor-Leste, Ron has only visited Greece, Pedro has only visited Mexico, Duane has only visited Zimbabwe, Randall has only visited Bhutan, George has only visited Cuba, Richard has only visited Switzerland, Darryl has only visited Myanmar, Guy has only visited Turkmenistan, Willard has only visited El Salvador, Oscar has only visited Guatemala, Greg has only visited Lebanon
hypothesis: Randall didn't visit Bhutan