<http://schema.org/dateModified>
"2012-12-31T14:57:58-05:00"^^<http://schema.org/Date>
<http://www.upi.com/blog/2012/12/31/Psy-wants-to-retire-Gangnam-Style-with-New-Years-Eve-performance/6301356983356/?spt=mps&or=4>