<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%2Fe9dfbd9c9eaf%2Fhop-to-it%3Finternal_campaign%3Dchannel>