<http://schema.org/category>
"\u0418\u0441\u0442\u043E\u0440\u0438\u044F"^^<http://www.w3.org/2001/XMLSchema#string>
<http://get.bg/uchmag-karta-obedinenie-na-germanija-obedinenie-na-italija-1870-1871-g-a-126.html>