Complex sentence: Ryszard Ostrowski (born February 6,1961 in Poznań, Wielkopolskie) is a former male track and field middle distance runner from Poland, who represented his native country at the 1988 Summer Olympics.
Split into simpler sentences: Ryszard Ostrowski (born February 6,1961), is a former male track and field middle distance runner from Poland. Ostrowski was born in Poznań, Wielkopolskie, and represented his native country at the 1988 Summer Olympics.