<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Sports_News/2012/02/24/Top-two-seeds-in-Buenos-Aires-semifinals/71041330135337/>
<http://www.upi.com/Sports_News/2012/02/24/Top-two-seeds-in-Buenos-Aires-semifinals/UPI-71041330135337/?rel=31581330220006>