<http://schema.org/dateModified>
"2014-02-19T19:34:00-05:00"^^<http://schema.org/Date>
<http://www.upi.com/Business_News/2014/02/19/Facebook-plunking-down-16-billion-for-WhatsApp/UPI-37971392856440/?spt=mps&or=3>