<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%2Fe3801dc7c7%2Fdon-t-make-me-get-out-my-red-pen-t-shirt>