<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/US/2012/10/22/Romney-Obama-duel-on-foreign-policy/89651350892800/>
<http://www.upi.com/Top_News/US/2012/10/22/Senators-debate-ahead-of-Obama-Romney/UPI-89651350892800/?rel=7991350922839>