<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.selfridges.com/US/en/?llc=dn&amp%253bpCategoryId=20154&amp%253bppp=min%253fcm_mmc=Social-_-Twitter-_-na-_-na>