premise: Brent has only visited Australia, Lester has only visited Grenada, Cory has only visited Norway, Benjamin has only visited Cameroon, Lawrence has only visited Georgia, Edwin has only visited China, Joshua has only visited Tonga, Jacob has only visited New Zealand, Mitchell has only visited Papua New Guinea, Jimmie has only visited Romania, Ray has only visited Portugal, Dan has only visited Dominica
hypothesis: Edwin didn't visit China