<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/US/2012/08/28/GOP-convention-nominates-Romney/24141346190643/>
<http://www.upi.com/Top_News/US/2012/08/28/GOP-convention-nominates-Romney/UPI-24141346190643/?rel=10541346257921>