Complex sentence: The is a Grade 1 flat horse race in Japan for three-year-old and above thoroughbreds run over a distance of 1,200 metres (approximately 6 furlongs) at Nakayama Racecourse in late September/early October.
Split into simpler sentences: The is a Grade 1 flat horse race in Japan for three-year-old and above thoroughbreds. It is run over a distance of 1,200 metres (approximately 6 furlongs) at Nakayama Racecourse in late September or early October.