<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.northumbriacommunity.org/?page=shop.product_details&flypage=flypage.pbv.tpl&category_id=34&product_id=151&vmcchk=1&option=com_virtuemart&Itemid=61>