<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/Mysteries-Thrillers/Angel-Fire-Audiobook/B009K4TA5S/ref=pd_rsp_tl_rd_6>