<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Sports_News/2004/07/19/UPI-Thoroughbred-Racing-Roundup/37581090249724/>
<http://www.upi.com/Sports_News/2004/07/19/UPI-Thoroughbred-Racing-Roundup/UPI-37581090249724/>