Complex sentence: City Hall MRT Station (NS25/EW13) is an underground Mass Rapid Transit (MRT) interchange station in Downtown Core, Singapore, that is part of the North South Line and the East West Line.
Split into simpler sentences: City Hall MRT Station (NS25/EW13) is an underground Mass Rapid Transit (MRT) interchange station in Downtown Core, Singapore. The station is served by both the North South Line and the East West Line.