<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/Return-to-Treasure-Island-Audiobook/B00872E8RY?ref_=pd_rsp_3>