Complex sentence: Of his successful progeny is the 2011 Preakness Stakes winner, Shackleford-a beautiful chestnut colt of three wins in eight starts, and a single place of over $1.3 million.
Split into simpler sentences: Of his successful progeny, is the 2011 Preakness Stakes winner, Shackleford. A beautiful chestnut colt of three wins in eight starts, and a single place of over $1.3 million.