<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/US/2010/07/23/Senators-express-regret-over-votes/51281279895900/>
<http://www.upi.com/Top_News/US/2010/07/23/Senators-express-regret-over-votes/UPI-51281279895900/>