<http://schema.org/contactType>
"customer service"^^<http://www.w3.org/2001/XMLSchema#string>
<http://lovebooks.pl/9783589020423/Lextra---Deutsch-als-Fremdsprache-DaF-Lernkrimis-SIRIUS-ermittelt-A1-A2-Sport-ist-Mord-Fuball-Krimi-.html>