premise: Daryl has only visited Haiti, Richard has only visited Syria, Franklin has only visited Singapore, Jeff has only visited India, Roy has only visited Gabon, Scott has only visited Tonga, Donald has only visited Venezuela, Derrick has only visited Kyrgyzstan, Bryan has only visited Timor-Leste, Max has only visited Dominica, Kyle has only visited Israel, Ricardo has only visited Serbia
hypothesis: Roy didn't visit Solomon Islands