Complex sentence: Scottish Chieftain (foaled February 24,1894) was an American Thoroughbred racehorse who is the only horse bred in the state of Montana to ever win the Belmont Stakes, an American Classic Race.
Split into simpler sentences: Scottish Chieftain (foaled February 24,1894) was an American Thoroughbred racehorse. He is the only horse bred in the state of Montana to ever win the Belmont Stakes, an American Classic Race.