Complex sentence: Giacomo (foaled February 16,2002 in Kentucky) is a Thoroughbred stallion race horse trained by John Shirreffs, who is perhaps best known for winning the 2005 Kentucky Derby in 2:02.75.
Split into simpler sentences: Giacomo (foaled February 16,2002 in Kentucky) is a Thoroughbred stallion race horse. He was trained by John Shirreffs, who is perhaps best known for winning the 2005 Kentucky Derby in 2:02.75.