<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Top_News/World-News/2013/03/29/Report-Dirty-air-in-Paris-rich-sections/92341364577603/>
<http://www.upi.com/Top_News/World-News/2013/03/29/Report-Dirty-air-in-Paris-rich-sections/UPI-92341364577603/>