<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wd.com/Side-Steps-Running-Boards/3-Side-Tube-Steps.aspx?t_c=70&t_s=75&t_pt=3184&t_pn=RUG11591.06>