<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/$30_--_$50/Retrofit_Kits/1.125-1%22_--_under_2%22-Height_(in)/results.aspx?Ns=P_List+Price%7C0>