premise: Reginald has only visited Tunisia, Allen has only visited Macedonia, Hector has only visited Andorra, Scott has only visited Myanmar, Sam has only visited Azerbaijan, Julio has only visited France, Marion has only visited Switzerland, Clyde has only visited Nauru, Armando has only visited Algeria, Brad has only visited China, Clinton has only visited Argentina, Ross has only visited Benin
hypothesis: Clyde didn't visit Nauru