<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wermuth.de/Trockner-Kondensation/1763521_Siemens-WT-46-E-185-IQ390-7-kg-Edelstahltrommel-Extraklasse.html>