<http://schema.org/dateModified>
"2013-07-20T11:18:28-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Science_News/2013/07/20/Rare-bronze-head-unearthed-in-central-China/UPI-99271374333508/?spt=mps&or=1>