<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wd.com/Jeep-Hitches-Hitch-Parts/Receiver-Hitch-with-Cargo-Rack.aspx?t_c=67&t_s=414&t_pt=3873&t_pn=RUG11580.21>