Question: Which group conducts the Australia's annual Thoroughbred horse race in which the Archer won in the 1860s? 
Sentence (from "Josie Carroll"): Josie Carroll (born December 8, 1957 in Scarborough, Ontario) is a Canadian Thoroughbred horse trainer and the first woman trainer to win the Queen's Plate, the oldest thoroughbred horse race in Canada and Canada's most prestigious race.
Relevant evidence: No