<http://schema.org/dateModified>
"2013-05-30T03:00:00-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Top_News/US/2013/05/30/Officials-Boston-bombing-suspect-friend-unarmed-when-killed/UPI-44691369897200/?rel=43431370459259>