Complex sentence: In January 1,2011 Bergsjön and Kortedala together became the Eastern District of Gothenburg, as a part of a larger reorganization of the City of Gothenburg where the number of district councils has been halved to ten.
Split into simpler sentences: In January 1,2011 Bergsjön together with Kortedala formed the Eastern District of Gothenburg. The change is part of a larger reorganization of the City of Gothenburg where the number of district councils has been halved to ten.