<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/Arts-Entertainment/The-Life-and-Works-of-Bach-Audiobook/B009Z3QNI6?ref_=pd_rsp_4>