premise: Terry has only visited Morocco, Edgar has only visited Botswana, Bryan has only visited South Africa, Ron has only visited Iraq, Stanley has only visited Croatia, Gabriel has only visited Peru, Ronnie has only visited Canada, Hector has only visited Madagascar, Vincent has only visited Cyprus, Stephen has only visited Turkmenistan, Alexander has only visited Vatican City, Jeff has only visited Côte D'ivore
hypothesis: Gabriel didn't visit Peru