<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/Nostalgia-Radio/X-Minus-One-Surface-Tension-August-28-1956-Audiobook/B00YAP3L3E>