<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.audible.de/pd/English-Self-Development/Become-a-Magnet-to-Money-Through-the-Sea-of-Unlimited-Consciousness-Hoerbuch/B005UO5254>