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 "Light Shift"): She then won the Classic Oaks over one and a half miles at Epsom, beating the Irish filly Peeping Fawn.
Relevant evidence: No