<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wermuth.de/Kuehlschraenke-bis-85cm/1407920_Blomberg-TSM-1551-A-Vollraum-weiss-unterbaufaehig.html>