<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/Newspapers-Magazines/The-New-York-Times-Audio-Digest-September-21-2011-Audiobook/B004S6X7L6>