<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eur.burton.com/boys-snowboard-pants/boys-pants,default,sc.html?collectionID=boys-pants&prefn1=filterColor&prefv1=Yellow&prefn2=variationSize&prefv2=M%7CXL>