<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.burton.com/default/mens-snowboard-gloves-mitts?prefn1=variationSize&prefn2=filterColor&srule=best-sellers&prefv1=M%5CL&prefv2=Purple>