Premise: California Chrome (foaled February 18, 2011) is an American Thoroughbred racehorse. He was named the 2014 and 2016 American Horse of the Year. He won the 2014 Kentucky Derby, the Preakness Stakes, and the 2016 Dubai World Cup. In 2016, he surpassed Curlin as the all-time leading North American horse in earnings won.
Hypothesis: California Chrome won the American Horse of the Year back to back.