Complex sentence: Samuel de Champlain Provincial Park is a 2550 hectares park spanning both sides of the Mattawa River, about 14 km west of Mattawa, Ontario, Canada.
Split into simpler sentences: Samuel de Champlain Provincial Park is a park spanning both sides of the Mattawa River. It has an area of 25.5 km² and is about 14 km west of Mattawa, Ontario, Canada.