Complex sentence: The Select Stakes is a Group 3 flat horse race in the United Kingdom for three-year-old and above thoroughbreds run over a distance of 1 mile 1 furlong and 192 yards (1,986 metres) at Goodwood Racecourse in September.
Split into simpler sentences: The Select Stakes is a Group 3 flat horse race in the United Kingdom for three-year-old and above thoroughbreds. It is run over a distance of 1 mile 1 furlong and 192 yards (1,986 metres) at Goodwood Racecourse in September.