<http://schema.org/pub_date>
"02/10/2013"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/02/09/twitter-job-search/?WT.mc_id=en_my_stories&amp&amp&amp?WT.mc_id=en_my_stories&amp&amp&amp>