<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%2F38e6657189%2Fk-swiss-men-s-athletic-ankle-socks-3-pack%3Finternal_campaign%3Dchannel>