Complex sentence: The Sydney siege inquest is an inquest that begun on 29 January 2015, and began to hear evidence starting 25 May 2015 and is planed to continue in blocks into 2016 in relation to the 2014 Sydney hostage crisis.
Split into simpler sentences: The Sydney siege inquest is an inquest that begun on 29 January 2015, and began to hear evidence starting 25 May 2015. It is planned to continue in blocks into 2016 in relation to the 2014 Sydney hostage crisis.