<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%2Fd53857d281%2Fsterling-silver-engagement-ring-set-princess-cut-cz%3Finternal_campaign%3Dchannel>