<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/Light_Bulbs/R--20-Shape/2.500-2%22_--_under_3%22-Diameter_(in)/results.aspx?Ns=P_List+Price%7C0>