<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wermuth.de/Kochfelder/15141716_Bosch-NKN-645-G-17-Edelstahl-Rahmen-60-cm-Elektro-Kochmulde.html>