Complex sentence: The province of Groningen is also called "Stad en Ommelanden", which means the city of Groningen and its surrounding lands, which are the historical regions of Fivelingo, Hunsingo, Oldambt, Westerkwartier, and Westerwolde.
Split into simpler sentences: The province of Groningen is also called "Stad en Ommelanden", which means the city of Groningen and its surrounding lands. These lands are the historical regions of Fivelingo, Hunsingo, Oldambt, Westerkwartier, and Westerwolde.