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