<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://workingperson.com/footwear-1/socks/safety-toe-socks/wigwam-socks-wigwam-at-work-crew-socks-f1140-731-104341.html>