<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wermuth.de/Kaffeeautomaten/51440134_KitchenAid-Artisan-5-KES-2102-EAC-ESPRESSOMASCHINE-creme.html>