Complex sentence: Shuvee (1966--1986) was an American Thoroughbred Champion Hall of Fame racehorse who was the second filly to ever win the U.S. Filly Triple Crown.
Split into simpler sentences: Shuvee (1966--1986) was an American Thoroughbred Champion Hall of Fame racehorse. Shuvee was the second filly to ever win the U.S. Filly Triple Crown.