<http://schema.org/availableLanguage>
"English"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.audible.com/pd/Teens/The-Case-of-the-Deadly-Desperados-Western-Mysteries-Book-One-Audiobook/B006ZO0JO2?ref_=pd_sim_narr_1>