Complex sentence: In 1999, Thomas Rosica was appointed as chief executive officer and national director in 2002 by Canadian Conference of Catholic Bishops of the World Youth Day and the Papal Visit of Pope John Paul II in Toronto.
Split into simpler sentences: In 1999, Thomas Rosica was appointed as Chief Executive Officer and National Director of the World Youth Day by Canadian Conference of Catholic Bishops. In 2002, he was responsible for Papal Visit of Pope John Paul II in Toronto.