Complex sentence: Announced as the successor to the PlayStation 3 during a press conference on 20 February 2013, it was launched on 15 November 2013 in North America, and 29 November 2013 in Europe and Australia.
Split into simpler sentences: Announced as the successor to the PlayStation 3 during a press conference on 20 February 2013. It was launched on 15 November 2013 in North America, and 29 November 2013 in Europe and Australia.