<http://schema.org/dateModified>
"2013-05-31T17:31:16-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Science_News/2013/05/31/A-persons-own-Facebook-profile-can-increase-self-esteem-study-finds/UPI-38851370035876/?rel=10641371070341>