<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.4wd.com/Heating-Cooling/Air-Conditioning-Compressor.aspx?t_c=84&t_s=519&t_pt=7870&t_pn=OAI17953.02>