<http://schema.org/dateModified>
"2013-07-08T13:55:54-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Top_News/US/2013/07/08/Families-of-students-killed-in-plane-crash-head-to-US/UPI-67791373306154/?rel=63641373382561>