Complex sentence: The Matron Stakes is a Group 1 flat horse race in the Republic of Ireland for three-year-old and above thoroughbred fillies and mares run over a distance of 1 mile at Leopardstown Racecourse in September.
Split into simpler sentences: The Matron Stakes is a Group 1 flat horse race in the Republic of Ireland for three-year-old and above thoroughbred fillies and mares. It is run over a distance of 1 mile at Leopardstown Racecourse in September.