<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wd.com/Drivetrain-Differential/Wheel-Lug-Stud.aspx?t_c=12&t_s=514&t_pt=3527&t_pn=ALY99STUD5>