premise: Green Lake is a city in Green Lake County, Wisconsin, United States. The population was 960 at the 2010 census. The city is located on the north side of Green Lake. The city of Green Lake is the county seat for the county of Green Lake. The Town of Green Lake is located on the south side of Big Green Lake, opposite the city.
hypothesis: Green Lake is not green.
reason: It is unclear if Green Lake is green or not. The system was confused by the context.