premise: Datong () is a prefecture-level city in northern Shanxi province, People's Republic of China, located in a basin at an elevation of 1040 m and bordering Inner Mongolia to the north and west and Hebei to the east. It had a population of 3,318,057 at the 2010 census of whom 1,629,035 lived in the built up area made of 3 out of 4 urban districts, namely Chengqu, Kuangqu and Nanjiao District.
hypothesis: The fourth district of Datong contains a population of 3,149,029 people at the time of the 2010 census. 
reason: The fourth district of Datong has 3,149,022 people (3318057-169035). 