Complex sentence: The 2009--10 Sydney New Year's Eve Fireworks is the 15th New Year's Eve event in Sydney, currently taking place at Sydney Harbour on the evening of December 31,2009 and in the early hours of January 1,2010.
Split into simpler sentences: The 2009--10 Sydney New Year's Eve Fireworks will be the 15th New Year's Eve event in Sydney. It will be held at Sydney Harbour on the evening of December 31,2009 and in the early hours of January 1,2010.