<http://schema.org/dateModified>
"2014-09-03T01:03:07-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Top_News/World-News/2014/09/03/President-Obama-arrives-in-Estonia-to-calm-Baltic-states/7581409717277/?spt=nil&d=p>