<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%2F6d1ae0cdb6%2Fxoxo-fashion-sunglasses-pink%3Finternal_campaign%3Dchannel>