<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Sports_News/2006/07/31/UPI-Thoroughbred-Racing-Roundup/58381154357505/>
<http://www.upi.com/Sports_News/2006/07/31/UPI-Thoroughbred-Racing-Roundup/UPI-58381154357505/>