<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://mobile.audible.com/pd/Arts-Entertainment/Thalia-Book-Club-A-Celebration-of-Jane-Austen-with-author-Karen-Joy-Fowler-and-other-Janeites-Audiobook/B002V8M97Q>