<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/US/2012/05/22/Poll-Obama-Romney-tied-on-economy/57271337686478/>
<http://www.upi.com/Top_News/US/2012/05/22/Poll-Obama-Romney-tied-on-economy/UPI-57271337686478/?st_rec=61561337956144>