<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/US/2012/08/01/Boston-mayor-has-eyelid-surgery/44101343875354/>
<http://www.upi.com/Top_News/US/2012/08/01/Boston-mayor-has-eyelid-surgery/UPI-44101343875354/>