<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/1-Number_of_Lamps/Fluorescent_Ballasts_--_Linear/$20_--_$30/1_X_50W_--_59W/results.aspx?Ns=P_List+Price%7C0&pid=398>