<http://schema.org/keywords>
"Ikebukuro, Yokohama, \u6A2A\u6D5C, \u6C60\u888B, \u98A8\u4FD7"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.tokyoreporter.com/2013/03/13/yokohama-ikebukuro-sex-businesses-to-wage-war/>