<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wheelparts.com/Towing/Select-Series-Fifth-Wheel-20K.aspx?t_c=67&t_s=59&t_pt=8505&t_pn=RES30033>