Havana sprawls over more than 700 square km (270 square miles) and is divided into five districts.
Havana sprawls over more than 700 square km with a concentrated inner city. 
mnli hypothesis: Havana sprawls over more than 700 square km with a concentrated inner city.  premise: Havana sprawls over more than 700 square km (270 square miles) and is divided into five districts.