Complex sentence: It hosts all five classic races in the racing calendar: the Irish Derby Stakes, the Irish Oaks, the Irish 1,000 Guineas, the Irish 2,000 Guineas and the St. Leger.
Split into simpler sentences: It hosts all five classic races in the racing calendar. These are the Irish Derby Stakes, the Irish Oaks, the Irish 1,000 Guineas, the Irish 2,000 Guineas, the St. Leger.