<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://itknowledgeexchange.techtarget.com/itanswers/page/8/?track=NL-873&ad=884018&asrc=EM_MUP_19919342&uid=10912080>