premise: Rafael has only visited Japan, Bruce has only visited China, Francis has only visited Ghana, Jason has only visited Tunisia, Chris has only visited Equatorial Guinea, Lewis has only visited Estonia, Darrell has only visited Lesotho, Dwayne has only visited Madagascar, Melvin has only visited El Salvador, Alan has only visited Sudan, Lee has only visited Portugal, Clifton has only visited Cameroon
hypothesis: Rafael didn't visit Democratic Republic of the Congo