<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.audible.com/pd/Drama-Poetry/Fantasies-of-the-Waking-Dreamer-Audiobook/B00CYRE4O0?ref_=det_sim_narr_2>