Complex sentence: The Prix de la Forêt is a Group 1 flat horse race in France for three-year-old and above thoroughbreds run over a distance of 1,400 metres (approximately 7 furlongs) at Longchamp Racecourse in October.
Split into simpler sentences: The Prix de la Forêt is a Group 1 flat horse race in France for three-year-old and above thoroughbreds. It is run over a distance of 1,400 metres (approximately 7 furlongs) at Longchamp Racecourse in October.