<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Sports_News/2009/10/13/Kings-owner-warns-of-exercise-ball-perils/68461255459575/>
<http://www.upi.com/Sports_News/2009/10/13/Kings-owner-warns-of-exercise-ball-perils/UPI-68461255459575/>