<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wheelparts.com/Towing/Tow-Bar-Mounting-Plate.aspx?t_c=67&t_s=111&t_pt=8374&t_pn=CURCE-9033JK>