Complex sentence: Recent winners of the Dee Stakes to be successful in the Derby include Oath and Kris Kin, while the 1990 winner Blue Stag went on to finish second at Epsom.
Split into simpler sentences: Recent winners of the Dee Stakes to be successful in the Derby include Oath and Kris Kin. The 1990 winner of the trial, Blue Stag, went on to finish second at Epsom.