Complex sentence: The 2011 Liège bombing took place on Tuesday, 13 December 2011 around noon, in the Belgian city of Liège on the main city square Saint Lambert, a hub for bus traffic, and the site of a main courthouse building and a seasonal Christmas market.
Split into simpler sentences: The 2011 Liège bombing took place on Tuesday, 13 December 2011 around noon, in the Belgian city of Liège. The attack took place on the main city square Saint Lambert, on a hub for bus traffic, and the site of a main courthouse building and a seasonal Christmas market.