<http://schema.org/dateModified>
"2013-04-29T08:58:08-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Business_News/Energy-Industry/2013/04/29/TransCanada-Keystone-XL-for-energy-independence/UPI-31211367240288/?rel=62361367323153>