<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%2Fa65f45c454%2Fvibe-wireless-usb-optical-mouse%3Finternal_campaign%3Dchannel>