Complex sentence: On December 9, Australian media reported an Australian mercenary commander was killed in Yemen alongside six Colombian nationals after Houthi fighters and Saleh army units attacked Saudi-led forces in the country's south-west.
Split into simpler sentences: On December 9, Australian media reported the death of an Australian mercenary commander killed in Yemen alongside 6 Colombian nationals. The death were reported after Houthi fighters and Saleh army units attacked Saudi-led forces in the country's south-west.