Complex sentence: Whangarei is governed locally by the Whangarei District Council and the city is split into two council wards, Denby, which takes the northern suburbs and Okara, which takes the southern half of the city.
Split into simpler sentences: Whangarei is governed locally by the Whangarei District Council. The city is split into two of the council wards, Denby, which takes the northern suburbs, and Okara, which takes the southern half of the city.