Complex sentence: On 23 December, a bushfire, burning in Port Lincoln, destroyed the State Emergency Service Headquarters and six houses with the fire also cutting power to approximately 6000 properties after burning though the main power lines.
Split into simpler sentences: On 23 December, a bushfire burnt land around Port Lincoln, destroying several structures including the State Emergency Service Headquarters and six houses. The fire also cut power to approximately 6,000 properties after burning though the main power lines.