Complex sentence: The Duke of York Stakes is a Group 2 flat horse race in the United Kingdom for three-year-old and above thoroughbreds run over a distance of 6 furlongs and 3 yards (1,210 metres) at York Racecourse in May.
Split into simpler sentences: The Duke of York Stakes is a Group 2 flat horse race in the United Kingdom for three-year-old and above thoroughbreds. It is run over a distance of 6 furlongs and 3 yards (1,210 metres) at York Racecourse in May.