Complex sentence: The Prix Noailles is a Group 2 flat horse race in France for three-year-old thoroughbreds (excluding geldings) run over a distance of 2,100 metres (approximately 1 mile 2½ furlongs) at Longchamp Racecourse in April.
Split into simpler sentences: The Prix Noailles is a Group 2 flat horse race in France for three-year-old thoroughbreds (excluding geldings). It is run over a distance of 2,100 metres (approximately 1 mile 2½ furlongs) at Longchamp Racecourse in April.