premise: Chad has only visited Estonia, Paul has only visited Tonga, Julian has only visited Monaco, Cecil has only visited Niger, Miguel has only visited Bolivia, Dwight has only visited El Salvador, Martin has only visited Laos, Jeffrey has only visited Czech Republic, Brandon has only visited Nepal, Bruce has only visited Gabon, Glen has only visited Saint Kitts & Nevis, Julio has only visited Cambodia
hypothesis: Armando didn't visit Cambodia