Complex sentence: The Grand Prix de Chantilly is a Group 2 flat horse race in France for four-year-old and above thoroughbreds run over a distance of 2,400 metres (approximately 1 mile 4 furlongs) at Chantilly Racecourse in June.
Split into simpler sentences: The Grand Prix de Chantilly is a Group 2 flat horse race in France for four-year-old and above thoroughbreds. It is run over a distance of 2,400 metres (approximately 1 mile 4 furlongs) at Chantilly Racecourse in June.