<http://schema.org/keywords>
"iOS9, iOS, android, \u0161tatistiky, ios9.3, spo\u013Eahlivos\u0165"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.thinkapple.sk/2016/03/31/ios-9-3-je-spolahlivejsi-nez-ktorykolvek-system-pred-nim-android-sa-nechyta/>