<http://schema.org/target>
"http://www.audible.co.uk/search?advsearchKeywords={search_term_string}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.audible.co.uk/pd/Health-Personal-Development/Escaping-the-Prison-of-the-Intellect-Audiobook/B004F4AQN8>