<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/Sci-Fi-Fantasy/When-True-Night-Falls-Audiobook/B007ZEB35K?ref_=pd_sim_narr_3>