premise: Xiaogan () is a prefecture-level city in east-central Hubei province, People's Republic of China, some 60 km northwest of the provincial capital of Wuhan. According to the 2010 census, its population totaled 4,814,542, of whom 908,266 lived in the built-up ("or metro") area of Xiaonan District.
hypothesis: The provincial capital of Wuhan has a population greater than 4 million people according to the 2010 census.
reason: The article says nothing about Wuhan's population.