<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.burton.com/womens-stay-warm-outerwear/stay-warm-womens,default,sc.html?prefn1=variationSize&prefv1=S%7CXL&prefn2=instock&prefv2=true&srule=filterFit>