<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wd.com/Drivetrain-Differential/Speedometer-Long-Gear-35-Teeth.aspx?t_c=12&t_s=116&t_pt=8368&t_pn=RUG18760.20>