Complex sentence: The current archbishop is Thomas Christopher Collins, appointed by Pope Benedict XVI on 16 December 2006, replacing Cardinal Aloysius Matthew Ambrozic, who retired after 16 years as Archbishop of Toronto.
Split into simpler sentences: The current archbishop is Thomas Christopher Collins, appointed by Pope Benedict XVI on 16 December 2006, replacing Aloysius Matthew Cardinal Ambrozic. Cardinal Ambrozic retired after 16 years as Archbishop of Toronto.