<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.tanga.com/users/new?return_path=%2Fdeals%2F5820dad532%2F6-decks-of-100-pvc-plastic-playing-cards%3Finternal_campaign%3Dchannel>