Complex sentence: The Spreewald (German for "Spree forest"; in Lower Sorbian: "Błota") is situated 100 km south-east of Berlin and designated a biosphere reserve by UNESCO in 1991.
Split into simpler sentences: The Spreewald (German for "Spree Woods"; in Lower Sorbian: "Błota") is situated about 100 km south-east of Berlin. It was designated a biosphere reserve by UNESCO in 1991.