<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Top_News/US/2014/01/03/Visiting-US-senators-urge-Afghan-president-to-sign-security-deal/UPI-36161388727126/?spt=rln&or=3>