<http://schema.org/dateModified>
"2013-07-19T17:28:36-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Science_News/2013/07/19/Chinese-scientists-report-simple-method-of-producing-stem-cells/UPI-92751374269316/?spt=hs&or=sn>