<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eur.burton.com/boys-apparel-hoodie/boys-apparel-hoodies,default,sc.html?prefn1=variationSize&prefv1=XL%7CS&prefn2=filterColor&prefv2=Brown&prefn3=instock&prefv3=true&srule=price-desc>