<http://schema.org/dateModified>
"2013-05-03T14:14:51-04:00"^^<http://schema.org/Date>
<http://www.upi.com/Science_News/2013/05/03/Scientists-say-stones-are-linked-to-1908-cosmic-blast-over-Siberia/UPI-87891367604891/?st_rec=63541377639623>