<http://schema.org/target>
"http://www.audible.com/search?advsearchKeywords={search_term_string}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.audible.com/pd/Nonfiction/Double-Entry-Audiobook/B00CKVWC3K?ref_=cat_22268_c10_9>