<http://schema.org/dateModified>
"2014-03-11T18:29:23-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Health_News/2014/03/11/Elderly-may-need-more-protein-to-preserve-functional-ability/UPI-21341394576963/?spt=mps&or=5>