Complex sentence: The Prix de Fontainebleau is a Group 3 flat horse race in France for three-year-old thoroughbred colts run over a distance of 1,600 metres (approximately 1 mile) at Longchamp Racecourse in April.
Split into simpler sentences: The Prix de Fontainebleau is a Group 3 flat horse race in France for three-year-old thoroughbred colts. It is run over a distance of 1,600 metres (approximately 1 mile) at Longchamp Racecourse in April.