<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/Radio-TV/Frys-English-Delight-Audiobook/B002V5BRX6/ref=pd_rsp_tl_rd_2>