Complex sentence: The Sirenia Stakes is a Group 3 flat horse race in the United Kingdom for two-year-old thoroughbreds run over a distance of 6 furlongs (1,207 metres) at Kempton Park Racecourse in early September.
Split into simpler sentences: The Sirenia Stakes is a Group 3 flat horse race in the United Kingdom for two-year-old thoroughbreds. It is run over a distance of 6 furlongs (1,207 metres) at Kempton Park Racecourse in early September.