premise: Daryl has only visited Sweden, Johnnie has only visited Mali, Justin has only visited Laos, Earl has only visited Vietnam, Dwayne has only visited Libya, Jeffery has only visited Chile, Ricardo has only visited Eswatini, Gregory has only visited Mongolia, Christian has only visited Republic of the Congo, Anthony has only visited Malaysia, Cody has only visited Poland, Henry has only visited Costa Rica
hypothesis: Henry didn't visit Greece