<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/The-Twelve-A-Novel-Audiobook/B009H8KSA8/ref=pd_rsp_tl_rd_6>