<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/277V-Input_Volts/over_$100/2_x_20W_--_29W/2-Number_of_Lamps/Fulham_Ballasts/results.aspx?Ns=P_List+Price%7C0&pid=358>