<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/Fiction/Best-Kept-Secret-Audiobook/B00BF2TN5U/ref=det_sim_narr_2>