Complex sentence: Niklas Stråhlén (born 4 September 1987) was born and raised in Gothenburg, Sweden, and has competed in windsurfing on a professional level since 2006 and in 2009 he was ranked 5th in Europe at the European Freestyle Pro Tour.
Split into simpler sentences: Niklas Stråhlén (born 4 September 1987) was born and raised in Gothenburg, Sweden on 4th September 1987, and has competed in windsurfing on a professional level since 2006. In 2009 he was ranked fifth in Europe at the European Freestyle Pro Tour.