<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/noresults.aspx?term=*par*halogen*&state=Halogen+Specialty+Light+Bulbs+with+a+Medium+Skirted+Base%2c+50W+-+99W>