<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/Ceiling_Fans/8.250-6%22_--_under_12%22-Diameter_(in)/CFL-Bulb_Type_Supplied/Progress_Lighting/results.aspx>