Complex sentence: Sebastian Ułamek (born November 20,1975 in Częstochowa, Poland) is a Polish speedway is a former Speedway Grand Prix rider who became European Pairs Champion in 2006.
Split into simpler sentences: Sebastian Ułamek (born 20 November 1975) is a Polish speedway rider. He is a former Speedway Grand Prix rider and won the European Pairs Championship in 2006.