<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.firebox.com/product/6068/iKettle?via=hp&s=2x2&t=feature&aff=512&awc=550_1381262255_1f8fec55e65638894c57f2e089289fff>