Complex sentence: Queen Beatrix of the Netherlands abdicates, and Prince Willem-Alexander ascends the throne as the first King of the Netherlands since the death of his great-great-grandfather, William III, in 1890.
Split into simpler sentences: Queen Beatrix of the Netherlands abdicates, and Prince Willem-Alexander ascends the throne as King of the Netherlands. He is the nation's first king since the death of his great-great-grandfather, William III, in 1890.