<http://schema.org/keywords>
"tipy a triky, OS X, vychyt\u00E1vky, tipy, triky, rady"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.thinkapple.sk/2015/08/01/vychytavky-v-os-x-o-ktorych-pravdpodobne-neviete/>