<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/Religion-Spirituality/Eugene-the-Duck-Audiobook/B00414KM2W?ref_=pd_rsp_1>