<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.burton.com/default/youth-snowboard-pants?prefn1=filterColor&prefn2=variationSize&prefv3=true&prefv1=Gray&prefv2=S&prefn3=instock&collectionID=youth-pants>