Question: What was the name of a thoroughbred racehorse that won the 1889 Epsom Oaks and was owned by the Earl of Dunraven and Lord Randolph Churchill, a man who created the National Union of the Conservative Party?
Sentence (from "L'Abbesse de Jouarre"): The horse was owned by Lord Randolph Churchill and the Earl of Dunraven during her three-year racing career.
Relevant evidence: Yes