Complex sentence: Bred in Ontario by Sam-Son Farm, the bay mare was by Danzig (a son of Northern Dancer), her dam was the Canadian Hall of Fame mare Classy' n Smart by Smarten.
Split into simpler sentences: Bred in Ontario by Sam-Son Farm, the bay mare was by Danzig (a son of Northern Dancer). Her dam was the Canadian Hall of Fame mare Classy' n Smart by Smarten.