premise: Danny has only visited Tuvalu, Chad has only visited North Korea, Edgar has only visited Timor-Leste, Shane has only visited Mali, Jay has only visited Jamaica, Derrick has only visited Fiji, Brett has only visited Canada, Daryl has only visited Malawi, Greg has only visited Bosnia & Herzegovinia, Ken has only visited Côte D'ivore, Mario has only visited Philippines, Ray has only visited Somalia
hypothesis: Gerald didn't visit Fiji