Complex sentence: With 839,000 km², of which 121,000 km² are lakes and rivers, it covers much of the Labrador Peninsula and about 55% of the total land surface area of Québec and its land area covers an area larger than the U.S. State of Texas.
Split into simpler sentences: With 839,000 km², of which 121,000 km² are lakes and rivers, it covers much of the Labrador Peninsula and about 55% of the total land surface area of Québec. Its land area covers an area larger than the U.S. State of Texas.