Complex sentence: California Chrome (foaled February 18,2011) is an American Thoroughbred racehorse who won the 2014 Kentucky Derby and the Preakness Stakes and was named the 2014 American Horse of the Year.
Split into simpler sentences: California Chrome (foaled February 18,2011) is an American Thoroughbred racehorse who won the 2014 Kentucky Derby and the Preakness Stakes. He was named the 2014 American Horse of the Year.