<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.opena.tv/dreambox-7020hd/9857-dreambox-7020hd-openatv-4-2-blue-panel-probleme-gp3-2-ob-es-moeglich-2.html>