<http://schema.org/dateModified>
"2013-04-21T16:28:03-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Top_News/World-News/2013/04/21/Anti-gay-protests-turn-violent-in-France/UPI-44211366576083/?spt=hs&or=tn>