Complex sentence: The 2009 Western Australian Youth Parliament was the first year that both the Legislative Assembly and the Legislative Council were occupied, and the first year that the Youth Governor was provided with a ceremonial guard, consisting of members from the Youth cadre of the Australian Defence Service.
Split into simpler sentences: The 2009 Western Australian Youth Parliament was the first year that both the Legislative Assembly and the Legislative Council were occupied. It was also the first year that the Youth Governor was provided with a ceremonial guard consisting of members from the youth cadre of the Australian Defence Service.