<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://koopplein.nl/hengelo/1152140/duplex-rvs-uitlaat-sportuitlaat-bmw-e30-e32-e34-e38-m3-m5.html>