Havana sprawls over more than 700 square km (270 square miles) and is divided into five districts.
Havana is tightly constrained in a small area and does not have any individual districts. 
mnli hypothesis: Havana is tightly constrained in a small area and does not have any individual districts.  premise: Havana sprawls over more than 700 square km (270 square miles) and is divided into five districts.